Merge requests API

Tier: Free, Premium, Ultimate Offering: GitLab.com, Self-managed, GitLab Dedicated
History
  • reference deprecated in GitLab 12.7.
  • merged_by deprecated in GitLab 14.7.
  • merge_status deprecated in favor of detailed_merge_status in GitLab 15.6.
  • with_merge_status_recheck changed in GitLab 15.11 with a flag named restrict_merge_status_recheck to be ignored for requests from users insufficient permissions. Disabled by default.
  • approvals_before_merge deprecated in GitLab 16.0.
  • prepared_at introduced in GitLab 16.1.

All API calls to non-public information require authentication.

Removals in API v5

The approvals_before_merge attribute is deprecated, and is scheduled for removal in API v5 in favor of the Merge request approvals API.

List merge requests

Get all merge requests the authenticated user has access to. By default it returns only merge requests created by the current user. To get all merge requests, use parameter scope=all.

Use the state parameter to get only merge requests with a given state (opened, closed, locked, or merged) or all states (all). Searching by locked generally returns no results as that state is short-lived and transitional. Use the pagination parameters page and per_page to restrict the list of merge requests. 

GET /merge_requests
GET /merge_requests?state=opened
GET /merge_requests?state=all
GET /merge_requests?milestone=release
GET /merge_requests?labels=bug,reproduced
GET /merge_requests?author_id=5
GET /merge_requests?author_username=gitlab-bot
GET /merge_requests?my_reaction_emoji=star
GET /merge_requests?scope=assigned_to_me
GET /merge_requests?search=foo&in=title

Supported attributes:

Attribute Type Required Description
approved_by_ids integer array No Returns the merge requests approved by all the users with the given id, up to 5 users. None returns merge requests with no approvals. Any returns merge requests with an approval. Premium and Ultimate only.
approver_ids integer array No Returns merge requests which have specified all the users with the given id as individual approvers. None returns merge requests without approvers. Any returns merge requests with an approver. Premium and Ultimate only.
approved string No Filters merge requests by their approved status. yes returns only approved merge requests. no returns only non-approved merge requests. Introduced in GitLab 15.11 with the flag mr_approved_filter. Disabled by default.
assignee_id integer No Returns merge requests assigned to the given user id. None returns unassigned merge requests. Any returns merge requests with an assignee.
author_id integer No Returns merge requests created by the given user id. Mutually exclusive with author_username. Combine with scope=all or scope=assigned_to_me.
author_username string No Returns merge requests created by the given username. Mutually exclusive with author_id.
created_after datetime No Returns merge requests created on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
created_before datetime No Returns merge requests created on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
deployed_after datetime No Returns merge requests deployed after the given date/time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
deployed_before datetime No Returns merge requests deployed before the given date/time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
environment string No Returns merge requests deployed to the given environment.
in string No Change the scope of the search attribute. title, description, or a string joining them with comma. Default is title,description.
labels string No Returns merge requests matching a comma-separated list of labels. None lists all merge requests with no labels. Any lists all merge requests with at least one label. Predefined names are case-insensitive.
merge_user_id integer No Returns the merge requests merged by the user with the given user id. Mutually exclusive with merge_user_username. Introduced in GitLab 17.0.
merge_user_username string No Returns the merge requests merged by the user with the given username. Mutually exclusive with merge_user_id. Introduced in GitLab 17.0.
milestone string No Returns merge requests for a specific milestone. None returns merge requests with no milestone. Any returns merge requests that have an assigned milestone.
my_reaction_emoji string No Returns merge requests reacted by the authenticated user by the given emoji. None returns issues not given a reaction. Any returns issues given at least one reaction.
not Hash No Returns merge requests that do not match the parameters supplied. Accepts: labels, milestone, author_id, author_username, assignee_id, assignee_username, reviewer_id, reviewer_username, my_reaction_emoji.
order_by string No Returns requests ordered by created_at, title, or updated_at fields. Default is created_at. Introduced in GitLab 14.8.
reviewer_id integer No Returns merge requests which have the user as a reviewer with the given user id. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_username.
reviewer_username string No Returns merge requests which have the user as a reviewer with the given username. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_id.
scope string No Returns merge requests for the given scope: created_by_me, assigned_to_me or all. Defaults to created_by_me.
search string No Search merge requests against their title and description.
sort string No Returns requests sorted in asc or desc order. Default is desc.
source_branch string No Returns merge requests with the given source branch.
state string No Returns all merge requests or just those that are opened, closed, locked, or merged.
target_branch string No Returns merge requests with the given target branch.
updated_after datetime No Returns merge requests updated on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
updated_before datetime No Returns merge requests updated on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
view string No If simple, returns the iid, URL, title, description, and basic state of merge request.
with_labels_details boolean No If true, response returns more details for each label in labels field: :name, :color, :description, :description_html, :text_color. Default is false.
with_merge_status_recheck boolean No If true, this projection requests (but does not guarantee) an asynchronous recalculation of the merge_status field. Default is false. In GitLab 15.11 and later, enable the restrict_merge_status_recheck feature flag to ignore this attribute when requested by users without at least the Developer role.
wip string No Filter merge requests against their wip status. Use yes to return only draft merge requests, no to return non-draft merge requests.

Example response: 

[
  {
    "id": 1,
    "iid": 1,
    "project_id": 3,
    "title": "test1",
    "description": "fixed login page css paddings",
    "state": "merged",
    "imported": false,
    "imported_from": "none",
    "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merge_user": {
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merged_at": "2018-09-07T11:16:17.520Z",
    "prepared_at": "2018-09-04T11:16:17.520Z",
    "closed_by": null,
    "closed_at": null,
    "created_at": "2017-04-29T08:46:00Z",
    "updated_at": "2017-04-29T08:46:00Z",
    "target_branch": "main",
    "source_branch": "test1",
    "upvotes": 0,
    "downvotes": 0,
    "author": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignee": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignees": [{
      "name": "Miss Monserrate Beier",
      "username": "axel.block",
      "id": 12,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/axel.block"
    }],
    "reviewers": [{
      "id": 2,
      "name": "Sam Bauch",
      "username": "kenyatta_oconnell",
      "state": "active",
      "avatar_url": "https://www.gravatar.com/avatar/956c92487c6f6f7616b536927e22c9a0?s=80&d=identicon",
      "web_url": "http://gitlab.example.com//kenyatta_oconnell"
    }],
    "source_project_id": 2,
    "target_project_id": 3,
    "labels": [
      "Community contribution",
      "Manage"
    ],
    "draft": false,
    "work_in_progress": false,
    "milestone": {
      "id": 5,
      "iid": 1,
      "project_id": 3,
      "title": "v2.0",
      "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
      "state": "closed",
      "created_at": "2015-02-02T19:49:26.013Z",
      "updated_at": "2015-02-02T19:49:26.013Z",
      "due_date": "2018-09-22",
      "start_date": "2018-08-08",
      "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
    },
    "merge_when_pipeline_succeeds": true,
    "merge_status": "can_be_merged",
    "detailed_merge_status": "not_open",
    "sha": "8888888888888888888888888888888888888888",
    "merge_commit_sha": null,
    "squash_commit_sha": null,
    "user_notes_count": 1,
    "discussion_locked": null,
    "should_remove_source_branch": true,
    "force_remove_source_branch": false,
    "allow_collaboration": false,
    "allow_maintainer_to_push": false,
    "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
    "references": {
      "short": "!1",
      "relative": "my-group/my-project!1",
      "full": "my-group/my-project!1"
    },
    "time_stats": {
      "time_estimate": 0,
      "total_time_spent": 0,
      "human_time_estimate": null,
      "human_total_time_spent": null
    },
    "squash": false,
    "task_completion_status":{
      "count":0,
      "completed_count":0
    }
  }
]

Merge requests list response notes

  • Listing merge requests might not proactively update merge_status (which also affects the has_conflicts), as this can be an expensive operation. If you need the value of these fields from this endpoint, set the with_merge_status_recheck parameter to true in the query.
  • For notes on merge request object fields, see Single merge request response notes.

List project merge requests

Get all merge requests for this project. 

GET /projects/:id/merge_requests
GET /projects/:id/merge_requests?state=opened
GET /projects/:id/merge_requests?state=all
GET /projects/:id/merge_requests?iids[]=42&iids[]=43
GET /projects/:id/merge_requests?milestone=release
GET /projects/:id/merge_requests?labels=bug,reproduced
GET /projects/:id/merge_requests?my_reaction_emoji=star

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
approved_by_ids integer array No Returns merge requests approved by all the users with the given id, up to 5 users. None returns merge requests with no approvals. Any returns merge requests with an approval. Premium and Ultimate only.
approver_ids integer array No Returns merge requests which have specified all the users with the given id as individual approvers. None returns merge requests without approvers. Any returns merge requests with an approver. Premium and Ultimate only.
approved string No Filters merge requests by their approved status. yes returns only approved merge requests. no returns only non-approved merge requests. Introduced in GitLab 15.11. Available only when the feature flag mr_approved_filter is enabled.
assignee_id integer No Returns merge requests assigned to the given user id. None returns unassigned merge requests. Any returns merge requests with an assignee.
author_id integer No Returns merge requests created by the given user id. Mutually exclusive with author_username.
author_username string No Returns merge requests created by the given username. Mutually exclusive with author_id.
created_after datetime No Returns merge requests created on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
created_before datetime No Returns merge requests created on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
environment string No Returns merge requests deployed to the given environment.
iids[] integer array No Returns the request having the given iid.
labels string No Returns merge requests matching a comma-separated list of labels. None lists all merge requests with no labels. Any lists all merge requests with at least one label. Predefined names are case-insensitive.
merge_user_id integer No Returns merge requests merged by the user with the given user id. Mutually exclusive with merge_user_username. Introduced in GitLab 17.0.
merge_user_username string No Returns merge requests merged by the user with the given username. Mutually exclusive with merge_user_id. Introduced in GitLab 17.0.
milestone string No Returns merge requests for a specific milestone. None returns merge requests with no milestone. Any returns merge requests that have an assigned milestone.
my_reaction_emoji string No Returns merge requests reacted by the authenticated user by the given emoji. None returns issues not given a reaction. Any returns issues given at least one reaction.
not Hash No Returns merge requests that do not match the parameters supplied. Accepts: labels, milestone, author_id, author_username, assignee_id, assignee_username, reviewer_id, reviewer_username, my_reaction_emoji.
order_by string No Returns requests ordered by created_at, title or updated_at fields. Default is created_at.
page integer No The page of results to return. Defaults to 1.
per_page integer No The number of results per page. Defaults to 20.
reviewer_id integer No Returns merge requests which have the user as a reviewer with the given user id. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_username.
reviewer_username string No Returns merge requests which have the user as a reviewer with the given username. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_id.
scope string No Returns merge requests for the given scope: created_by_me, assigned_to_me, or all.
search string No Search merge requests against their title and description.
sort string No Returns requests sorted in asc or desc order. Default is desc.
source_branch string No Returns merge requests with the given source branch.
state string No Returns all merge requests (all) or just those that are opened, closed, locked, or merged.
target_branch string No Returns merge requests with the given target branch.
updated_after datetime No Returns merge requests updated on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
updated_before datetime No Returns merge requests updated on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
view string No If simple, returns the iid, URL, title, description, and basic state of merge request.
wip string No Filter merge requests against their wip status. yes to return only draft merge requests, no to return non-draft merge requests.
with_labels_details boolean No If true, response returns more details for each label in labels field: :name, :color, :description, :description_html, :text_color. Default is false.
with_merge_status_recheck boolean No If true, this projection requests (but does not guarantee) the asynchronous recalculation of the merge_status field. Default is false. In GitLab 15.11 and later, enable the restrict_merge_status_recheck feature flag to ignore this attribute when requested by users without at least the Developer role.

If successful, returns 200 OK and the following response attributes:

Attribute Type Description
[].id integer ID of the merge request.
[].iid integer Internal ID of the merge request.
[].approvals_before_merge integer Number of approvals required before this merge request can merge. To configure approval rules, see Merge request approvals API. Deprecated in GitLab 16.0. Premium and Ultimate only.
[].assignee object First assignee of the merge request.
[].assignees array Assignees of the merge request.
[].author object User who created this merge request.
[].blocking_discussions_resolved boolean Indicates if all discussions are resolved only if all are required before merge request can be merged.
[].closed_at datetime Timestamp of when the merge request was closed.
[].closed_by object User who closed this merge request.
[].created_at datetime Timestamp of when the merge request was created.
[].description string Description of the merge request.
[].detailed_merge_status string Detailed merge status of the merge request. See merge status for a list of potential values.
[].discussion_locked boolean Indicates if comments on the merge request are locked to members only.
[].downvotes integer Number of downvotes for the merge request.
[].draft boolean Indicates if the merge request is a draft.
[].force_remove_source_branch boolean Indicates if the project settings lead to source branch deletion after merge.
[].has_conflicts boolean Indicates if merge request has conflicts and cannot merge. Dependent on the merge_status property. Returns false unless merge_status is cannot_be_merged.
[].labels array Labels of the merge request.
[].merge_commit_sha string SHA of the merge request commit. Returns null until merged.
[].merge_status string Status of the merge request. Can be unchecked, checking, can_be_merged, cannot_be_merged, or cannot_be_merged_recheck. Affects the has_conflicts property. For important notes on response data, see Single merge request response notes. Deprecated in GitLab 15.6. Use detailed_merge_status instead.
[].merge_user object User who merged this merge request, the user who set it to auto-merge, or null. Introduced in GitLab 14.7.
[].merge_when_pipeline_succeeds boolean Indicates if the merge has been set to merge when its pipeline succeeds.
[].merged_at datetime Timestamp of when the merge request was merged.
[].merged_by object User who merged this merge request or set it to auto-merge. Deprecated in GitLab 14.7, and scheduled for removal in API version 5. Use merge_user instead.
[].milestone object Milestone of the merge request.
[].prepared_at datetime Timestamp of when the merge request was prepared. This field is populated one time, only after all the preparation steps are completed, and is not updated if more changes are added.
[].project_id integer ID of the project where the merge request resides. Always equal to target_project_id.
[].reference string Internal reference of the merge request. Returned in shortened format by default. Deprecated in GitLab 12.7, and scheduled for removal in API version 5. Use references instead.
[].references object Internal references of the merge request. Includes short, relative, and full references. references.relative is relative to the merge request’s group or project. When fetched from the merge request’s project, relative and short formats are identical. When requested across groups or projects, relative and full formats are identical.
[].reviewers array Reviewers of the merge request.
[].sha string Diff head SHA of the merge request.
[].should_remove_source_branch boolean Indicates if the source branch of the merge request should be deleted after merge.
[].source_branch string Source branch of the merge request.
[].source_project_id integer ID of the merge request source project. Equal to target_project_id, unless the merge request originates from a fork.
[].squash boolean If true, squash all commits into a single commit on merge. Project settings might override this value. Use squash_on_merge instead to take project squash options into account.
[].squash_commit_sha string SHA of the squash commit. Empty until merged.
[].squash_on_merge boolean Indicates if the merge request will be squashed when merged.
[].state string State of the merge request. Can be opened, closed, merged, locked.
[].target_branch string Target branch of the merge request.
[].target_project_id integer ID of the merge request target project.
[].task_completion_status object Completion status of tasks. Includes count and completed_count.
[].time_stats object Time tracking stats of the merge request. Includes time_estimate, total_time_spent, human_time_estimate, and human_total_time_spent.
[].title string Title of the merge request.
[].updated_at datetime Timestamp of when the merge request was updated.
[].upvotes integer Number of upvotes for the merge request.
[].user_notes_count integer User notes count of the merge request.
[].web_url string Web URL of the merge request.
[].work_in_progress boolean Deprecated: Use draft instead. Indicates if the merge request is a draft.

Example request: 

curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/1/merge_requests"

Example response: 

[
  {
    "id": 1,
    "iid": 1,
    "project_id": 3,
    "title": "test1",
    "description": "fixed login page css paddings",
    "state": "merged",
    "imported": false,
    "imported_from": "none",
    "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "locked": false,
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merge_user": {
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "locked": false,
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merged_at": "2018-09-07T11:16:17.520Z",
    "prepared_at": "2018-09-04T11:16:17.520Z",
    "closed_by": null,
    "closed_at": null,
    "created_at": "2017-04-29T08:46:00Z",
    "updated_at": "2017-04-29T08:46:00Z",
    "target_branch": "main",
    "source_branch": "test1",
    "upvotes": 0,
    "downvotes": 0,
    "author": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "locked": false,
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignee": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "locked": false,
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignees": [{
      "name": "Miss Monserrate Beier",
      "username": "axel.block",
      "id": 12,
      "state": "active",
      "locked": false,
      "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/axel.block"
    }],
    "reviewers": [{
      "id": 2,
      "name": "Sam Bauch",
      "username": "kenyatta_oconnell",
      "state": "active",
      "avatar_url": "https://www.gravatar.com/avatar/956c92487c6f6f7616b536927e22c9a0?s=80&d=identicon",
      "web_url": "http://gitlab.example.com//kenyatta_oconnell"
    }],
    "source_project_id": 2,
    "target_project_id": 3,
    "labels": [
      "Community contribution",
      "Manage"
    ],
    "draft": false,
    "work_in_progress": false,
    "milestone": {
      "id": 5,
      "iid": 1,
      "project_id": 3,
      "title": "v2.0",
      "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
      "state": "closed",
      "created_at": "2015-02-02T19:49:26.013Z",
      "updated_at": "2015-02-02T19:49:26.013Z",
      "due_date": "2018-09-22",
      "start_date": "2018-08-08",
      "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
    },
    "merge_when_pipeline_succeeds": true,
    "merge_status": "can_be_merged",
    "detailed_merge_status": "not_open",
    "sha": "8888888888888888888888888888888888888888",
    "merge_commit_sha": null,
    "squash_commit_sha": null,
    "user_notes_count": 1,
    "discussion_locked": null,
    "should_remove_source_branch": true,
    "force_remove_source_branch": false,
    "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
    "reference": "!1",
    "references": {
      "short": "!1",
      "relative": "!1",
      "full": "my-group/my-project!1"
    },
    "time_stats": {
      "time_estimate": 0,
      "total_time_spent": 0,
      "human_time_estimate": null,
      "human_total_time_spent": null
    },
    "squash": false,
    "squash_on_merge": false,
    "task_completion_status":{
      "count":0,
      "completed_count":0
    },
    "has_conflicts": false,
    "blocking_discussions_resolved": true,
    "approvals_before_merge": 2
  }
]

For important notes on response data, see Merge requests list response notes.

List group merge requests

Get all merge requests for this group and its subgroups. 

GET /groups/:id/merge_requests
GET /groups/:id/merge_requests?state=opened
GET /groups/:id/merge_requests?state=all
GET /groups/:id/merge_requests?milestone=release
GET /groups/:id/merge_requests?labels=bug,reproduced
GET /groups/:id/merge_requests?my_reaction_emoji=star

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the group owned by the authenticated user.
approved_by_ids integer array No Returns the merge requests approved by all the users with the given id, up to 5 users. None returns merge requests with no approvals. Any returns merge requests with an approval. Premium and Ultimate only.
approved_by_usernames string array No Returns the merge requests approved by all the users with the given username, up to 5 users. None returns merge requests with no approvals. Any returns merge requests with an approval. Premium and Ultimate only.
approver_ids integer array No Returns merge requests which have specified all the users with the given id as individual approvers. None returns merge requests without approvers. Any returns merge requests with an approver. Premium and Ultimate only.
approved string No Filters merge requests by their approved status. yes returns only approved merge requests. no returns only non-approved merge requests. Introduced in GitLab 15.11. Available only when the feature flag mr_approved_filter is enabled.
assignee_id integer No Returns merge requests assigned to the given user id. None returns unassigned merge requests. Any returns merge requests with an assignee.
author_id integer No Returns merge requests created by the given user id. Mutually exclusive with author_username.
author_username string No Returns merge requests created by the given username. Mutually exclusive with author_id.
created_after datetime No Returns merge requests created on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
created_before datetime No Returns merge requests created on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
labels string No Returns merge requests matching a comma-separated list of labels. None lists all merge requests with no labels. Any lists all merge requests with at least one label. Predefined names are case-insensitive.
merge_user_id integer No Returns merge requests merged by the user with the given user id. Mutually exclusive with merge_user_username. Introduced in GitLab 17.0.
merge_user_username string No Returns merge requests merged by the user with the given username. Mutually exclusive with merge_user_id. Introduced in GitLab 17.0.
milestone string No Returns merge requests for a specific milestone. None returns merge requests with no milestone. Any returns merge requests that have an assigned milestone.
my_reaction_emoji string No Returns merge requests reacted by the authenticated user by the given emoji. None returns issues not given a reaction. Any returns issues given at least one reaction.
non_archived boolean No Returns merge requests from non archived projects only. Default is true.
not Hash No Returns merge requests that do not match the parameters supplied. Accepts: labels, milestone, author_id, author_username, assignee_id, assignee_username, reviewer_id, reviewer_username, my_reaction_emoji.
order_by string No Returns merge requests ordered by created_at, title or updated_at fields. Default is created_at.
reviewer_id integer No Returns merge requests which have the user as a reviewer with the given user id. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_username.
reviewer_username string No Returns merge requests which have the user as a reviewer with the given username. None returns merge requests with no reviewers. Any returns merge requests with any reviewer. Mutually exclusive with reviewer_id.
scope string No Returns merge requests for the given scope: created_by_me, assigned_to_me or all.
search string No Search merge requests against their title and description.
source_branch string No Returns merge requests with the given source branch.
sort string No Returns merge requests sorted in asc or desc order. Default is desc.
state string No Returns all merge requests (all) or just those that are opened, closed, locked, or merged.
target_branch string No Returns merge requests with the given target branch.
updated_after datetime No Returns merge requests updated on or after the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
updated_before datetime No Returns merge requests updated on or before the given time. Expected in ISO 8601 format (2019-03-15T08:00:00Z).
view string No If simple, returns the iid, URL, title, description, and basic state of merge request.
with_labels_details boolean No If true, response returns more details for each label in labels field: :name, :color, :description, :description_html, :text_color. Default is false.
with_merge_status_recheck boolean No If true, this projection requests (but does not guarantee) the asynchronous recalculation of the merge_status field. Default is false. In GitLab 15.11 and later, enable the restrict_merge_status_recheck feature flag to ignore this attribute when requested by users without at least the Developer role.

To restrict the list of merge requests, use the pagination parameters page and per_page.

In the response, group_id represents the ID of the group containing the project where the merge request resides.

Example response: 

[
  {
    "id": 1,
    "iid": 1,
    "project_id": 3,
    "title": "test1",
    "description": "fixed login page css paddings",
    "state": "merged",
    "imported": false,
    "imported_from": "none",
    "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merge_user": {
      "id": 87854,
      "name": "Douwe Maan",
      "username": "DouweM",
      "state": "active",
      "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
      "web_url": "https://gitlab.com/DouweM"
    },
    "merged_at": "2018-09-07T11:16:17.520Z",
    "prepared_at": "2018-09-04T11:16:17.520Z",
    "closed_by": null,
    "closed_at": null,
    "created_at": "2017-04-29T08:46:00Z",
    "updated_at": "2017-04-29T08:46:00Z",
    "target_branch": "main",
    "source_branch": "test1",
    "upvotes": 0,
    "downvotes": 0,
    "author": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignee": {
      "id": 1,
      "name": "Administrator",
      "username": "admin",
      "state": "active",
      "avatar_url": null,
      "web_url" : "https://gitlab.example.com/admin"
    },
    "assignees": [{
      "name": "Miss Monserrate Beier",
      "username": "axel.block",
      "id": 12,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/axel.block"
    }],
    "reviewers": [{
      "id": 2,
      "name": "Sam Bauch",
      "username": "kenyatta_oconnell",
      "state": "active",
      "avatar_url": "https://www.gravatar.com/avatar/956c92487c6f6f7616b536927e22c9a0?s=80&d=identicon",
      "web_url": "http://gitlab.example.com//kenyatta_oconnell"
    }],
    "source_project_id": 2,
    "target_project_id": 3,
    "labels": [
      "Community contribution",
      "Manage"
    ],
    "draft": false,
    "work_in_progress": false,
    "milestone": {
      "id": 5,
      "iid": 1,
      "project_id": 3,
      "title": "v2.0",
      "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
      "state": "closed",
      "created_at": "2015-02-02T19:49:26.013Z",
      "updated_at": "2015-02-02T19:49:26.013Z",
      "due_date": "2018-10-22",
      "start_date": "2018-09-08",
      "web_url": "gitlab.example.com/my-group/my-project/milestones/1"
    },
    "merge_when_pipeline_succeeds": true,
    "merge_status": "can_be_merged",
    "detailed_merge_status": "not_open",
    "sha": "8888888888888888888888888888888888888888",
    "merge_commit_sha": null,
    "squash_commit_sha": null,
    "user_notes_count": 1,
    "discussion_locked": null,
    "should_remove_source_branch": true,
    "force_remove_source_branch": false,
    "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
    "references": {
      "short": "!1",
      "relative": "my-project!1",
      "full": "my-group/my-project!1"
    },
    "time_stats": {
      "time_estimate": 0,
      "total_time_spent": 0,
      "human_time_estimate": null,
      "human_total_time_spent": null
    },
    "squash": false,
    "task_completion_status":{
      "count":0,
      "completed_count":0
    },
    "has_conflicts": false,
    "blocking_discussions_resolved": true
  }
]

For important notes on response data, see Merge requests list response notes.

Get single MR

Shows information about a single merge request. 

GET /projects/:id/merge_requests/:merge_request_iid

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
include_diverged_commits_count boolean No If true, response includes the commits behind the target branch.
include_rebase_in_progress boolean No If true, response includes whether a rebase operation is in progress.
render_html boolean No If true, response includes rendered HTML for title and description.

Response

Attribute Type Description
approvals_before_merge integer Number of approvals required before this merge request can merge. To configure approval rules, see Merge request approvals API. Deprecated in GitLab 16.0. Premium and Ultimate only.
assignee object First assignee of the merge request.
assignees array Assignees of the merge request.
author object User who created this merge request.
blocking_discussions_resolved boolean Indicates if all discussions are resolved only if all are required before merge request can be merged.
changes_count string Number of changes made on the merge request. Empty when the merge request is created, and populates asynchronously. A string, not an integer. When a merge request has too many changes to display and store, the value is capped at 1000 and returns the string "1000+". See Empty API Fields for new merge requests.
closed_at datetime Timestamp of when the merge request was closed.
closed_by object User who closed this merge request.
created_at datetime Timestamp of when the merge request was created.
description string Description of the merge request. Contains Markdown rendered as HTML for caching.
detailed_merge_status string Detailed merge status of the merge request. See merge status for a list of potential values.
diff_refs object References of the base SHA, the head SHA, and the start SHA for this merge request. Corresponds to the latest diff version of the merge request. Empty when the merge request is created, and populates asynchronously. See Empty API fields for new merge requests.
discussion_locked boolean Indicates if comments on the merge request are locked to members only.
downvotes integer Number of downvotes for the merge request.
draft boolean Indicates if the merge request is a draft.
first_contribution boolean Indicates if the merge request is the first contribution of the author.
first_deployed_to_production_at datetime Timestamp of when the first deployment finished.
force_remove_source_branch boolean Indicates if the project settings lead to source branch deletion after merge.
has_conflicts boolean Indicates if merge request has conflicts and cannot merge. Dependent on the merge_status property. Returns false unless merge_status is cannot_be_merged.
head_pipeline object Pipeline running on the branch HEAD of the merge request. Use instead of pipeline, because it contains more complete information.
id integer ID of the merge request.
iid integer Internal ID of the merge request.
labels array Labels of the merge request.
latest_build_finished_at datetime Timestamp of when the latest build for the merge request finished.
latest_build_started_at datetime Timestamp of when the latest build for the merge request started.
merge_commit_sha string SHA of the merge request commit. Returns null until merged.
merge_error string Error message shown when a merge has failed. To check mergeability, use detailed_merge_status instead
merge_user object The user who merged this merge request, the user who set it to auto-merge, or null.
merge_status string Status of the merge request. Can be unchecked, checking, can_be_merged, cannot_be_merged, or cannot_be_merged_recheck. Affects the has_conflicts property. For important notes on response data, see Single merge request response notes. Deprecated in GitLab 15.6. Use detailed_merge_status instead.
merge_when_pipeline_succeeds boolean Indicates if the merge is set to merge when its pipeline succeeds.
merged_at datetime Timestamp of when the merge request merged.
merged_by object User who merged this merge request or set it to auto-merge. Deprecated in GitLab 14.7, and scheduled for removal in API version 5. Use merge_user instead.
milestone object Milestone of the merge request.
pipeline object Pipeline running on the branch HEAD of the merge request. Consider using head_pipeline instead, as it contains more information.
prepared_at datetime Timestamp of when the merge request was prepared. This field populates one time, only after all the preparation steps complete, and is not updated if more changes are added.
project_id integer ID of the merge request project.
reference string Internal reference of the merge request. Returned in shortened format by default. Deprecated in GitLab 12.7, and scheduled for removal in API version 5. Use references instead.
references object Internal references of the merge request. Includes short, relative, and full references. references.relative is relative to the merge request’s group or project. When fetched from the merge request’s project, relative and short formats are identical. When requested across groups or projects, relative and full formats are identical.
reviewers array Reviewers of the merge request.
sha string Diff head SHA of the merge request.
should_remove_source_branch boolean Indicates if the source branch of the merge request should be deleted after merge.
source_branch string Source branch of the merge request.
source_project_id integer ID of the merge request source project.
squash boolean Indicates if squash on merge is enabled.
squash_commit_sha string SHA of the squash commit. Empty until merged.
state string State of the merge request. Can be opened, closed, merged or locked.
subscribed boolean Indicates if the current authenticated user subscribes to this merge request.
target_branch string Target branch of the merge request.
target_project_id integer ID of the merge request target project.
task_completion_status object Completion status of tasks.
title string Title of the merge request.
updated_at datetime Timestamp of when the merge request was updated.
upvotes integer Number of upvotes for the merge request.
user object Permissions of the user requested for the merge request.
user_notes_count integer User notes count of the merge request.
web_url string Web URL of the merge request.
work_in_progress boolean Deprecated: Use draft instead. Indicates if the merge request is a draft.

Example response: 

{
  "id": 155016530,
  "iid": 133,
  "project_id": 15513260,
  "title": "Manual job rules",
  "description": "",
  "state": "opened",
  "imported": false,
  "imported_from": "none",
  "created_at": "2022-05-13T07:26:38.402Z",
  "updated_at": "2022-05-14T03:38:31.354Z",
  "merged_by": null, // Deprecated and will be removed in API v5. Use `merge_user` instead.
  "merge_user": null,
  "merged_at": null,
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "target_branch": "main",
  "source_branch": "manual-job-rules",
  "user_notes_count": 0,
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 4155490,
    "username": "marcel.amirault",
    "name": "Marcel Amirault",
    "state": "active",
    "avatar_url": "https://gitlab.com/uploads/-/system/user/avatar/4155490/avatar.png",
    "web_url": "https://gitlab.com/marcel.amirault"
  },
  "assignees": [],
  "assignee": null,
  "reviewers": [],
  "source_project_id": 15513260,
  "target_project_id": 15513260,
  "labels": [],
  "draft": false,
  "work_in_progress": false,
  "milestone": null,
  "merge_when_pipeline_succeeds": false,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "can_be_merged",
  "sha": "e82eb4a098e32c796079ca3915e07487fc4db24c",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "discussion_locked": null,
  "should_remove_source_branch": null,
  "force_remove_source_branch": true,
  "reference": "!133", // Deprecated. Use `references` instead.
  "references": {
    "short": "!133",
    "relative": "!133",
    "full": "marcel.amirault/test-project!133"
  },
  "web_url": "https://gitlab.com/marcel.amirault/test-project/-/merge_requests/133",
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "task_completion_status": {
    "count": 0,
    "completed_count": 0
  },
  "has_conflicts": false,
  "blocking_discussions_resolved": true,
  "approvals_before_merge": null, // deprecated, use [Merge request approvals API](merge_request_approvals.md)
  "subscribed": true,
  "changes_count": "1",
  "latest_build_started_at": "2022-05-13T09:46:50.032Z",
  "latest_build_finished_at": null,
  "first_deployed_to_production_at": null,
  "pipeline": { // Use `head_pipeline` instead.
    "id": 538317940,
    "iid": 1877,
    "project_id": 15513260,
    "sha": "1604b0c46c395822e4e9478777f8e54ac99fe5b9",
    "ref": "refs/merge-requests/133/merge",
    "status": "failed",
    "source": "merge_request_event",
    "created_at": "2022-05-13T09:46:39.560Z",
    "updated_at": "2022-05-13T09:47:20.706Z",
    "web_url": "https://gitlab.com/marcel.amirault/test-project/-/pipelines/538317940"
  },
  "head_pipeline": {
    "id": 538317940,
    "iid": 1877,
    "project_id": 15513260,
    "sha": "1604b0c46c395822e4e9478777f8e54ac99fe5b9",
    "ref": "refs/merge-requests/133/merge",
    "status": "failed",
    "source": "merge_request_event",
    "created_at": "2022-05-13T09:46:39.560Z",
    "updated_at": "2022-05-13T09:47:20.706Z",
    "web_url": "https://gitlab.com/marcel.amirault/test-project/-/pipelines/538317940",
    "before_sha": "1604b0c46c395822e4e9478777f8e54ac99fe5b9",
    "tag": false,
    "yaml_errors": null,
    "user": {
      "id": 4155490,
      "username": "marcel.amirault",
      "name": "Marcel Amirault",
      "state": "active",
      "avatar_url": "https://gitlab.com/uploads/-/system/user/avatar/4155490/avatar.png",
      "web_url": "https://gitlab.com/marcel.amirault"
    },
    "started_at": "2022-05-13T09:46:50.032Z",
    "finished_at": "2022-05-13T09:47:20.697Z",
    "committed_at": null,
    "duration": 30,
    "queued_duration": 10,
    "coverage": null,
    "detailed_status": {
      "icon": "status_failed",
      "text": "failed",
      "label": "failed",
      "group": "failed",
      "tooltip": "failed",
      "has_details": true,
      "details_path": "/marcel.amirault/test-project/-/pipelines/538317940",
      "illustration": null,
      "favicon": "/assets/ci_favicons/favicon_status_failed-41304d7f7e3828808b0c26771f0309e55296819a9beea3ea9fbf6689d9857c12.png"
    }
  },
  "diff_refs": {
    "base_sha": "1162f719d711319a2efb2a35566f3bfdadee8bab",
    "head_sha": "e82eb4a098e32c796079ca3915e07487fc4db24c",
    "start_sha": "1162f719d711319a2efb2a35566f3bfdadee8bab"
  },
  "merge_error": null,
  "first_contribution": false,
  "user": {
    "can_merge": true
  },
  "approvals_before_merge": { // Available for GitLab Premium and Ultimate tiers only
    "id": 1,
    "title": "test1",
    "approvals_before_merge": null
  },
}

Single merge request response notes

The mergeability (merge_status) of each merge request is checked asynchronously when a request is made to this endpoint. Poll this API endpoint to get the updated status. This affects the has_conflicts property, as it depends on the merge_status. It returns false unless merge_status is cannot_be_merged.

Merge status

History

Use detailed_merge_status instead of merge_status to account for all potential statuses.

  • The detailed_merge_status field can contain one of the following values related to the merge request:
    • approvals_syncing: The merge request’s approvals are syncing.
    • blocked_status: Blocked by another merge request.
    • checking: Git is testing if a valid merge is possible.
    • ci_must_pass: A CI/CD pipeline must succeed before merge.
    • ci_still_running: A CI/CD pipeline is still running.
    • conflict: Conflicts exist between the source and target branches.
    • discussions_not_resolved: All discussions must be resolved before merge.
    • draft_status: Can’t merge because the merge request is a draft.
    • external_status_checks: All status checks must pass before merge.
    • jira_association_missing: The title or description must reference a Jira issue. To configure, see Require associated Jira issue for merge requests to be merged.
    • mergeable: The branch can merge cleanly into the target branch.
    • need_rebase: The merge request must be rebased.
    • not_approved: Approval is required before merge.
    • not_open: The merge request must be open before merge.
    • requested_changes: The merge request has reviewers who have requested changes.
    • unchecked: Git has not yet tested if a valid merge is possible.

Preparation steps

The prepared_at field populates one time, only after these steps complete:

  • Create the diff.
  • Create the pipelines.
  • Check mergeability.
  • Link all Git LFS objects.
  • Send notifications.

The prepared_at field does not update if more changes are added to the merge request.

Get single merge request participants

Get a list of merge request participants. 

GET /projects/:id/merge_requests/:merge_request_iid/participants

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

Example response: 

[
  {
    "id": 1,
    "name": "John Doe1",
    "username": "user1",
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/c922747a93b40d1ea88262bf1aebee62?s=80&d=identicon",
    "web_url": "http://localhost/user1"
  },
  {
    "id": 2,
    "name": "John Doe2",
    "username": "user2",
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/10fc7f102be8de7657fb4d80898bbfe3?s=80&d=identicon",
    "web_url": "http://localhost/user2"
  }
]

Get single merge request reviewers

Get a list of merge request reviewers. 

GET /projects/:id/merge_requests/:merge_request_iid/reviewers

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

Example response: 

[
  {
    "user": {
      "id": 1,
      "name": "John Doe1",
      "username": "user1",
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/c922747a93b40d1ea88262bf1aebee62?s=80&d=identicon",
      "web_url": "http://localhost/user1"
    },
    "state": "unreviewed",
    "created_at": "2022-07-27T17:03:27.684Z"
  },
  {
    "user": {
      "id": 2,
      "name": "John Doe2",
      "username": "user2",
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/10fc7f102be8de7657fb4d80898bbfe3?s=80&d=identicon",
      "web_url": "http://localhost/user2"
    },
    "state": "reviewed",
    "created_at": "2022-07-27T17:03:27.684Z"
  }
]

Get single merge request commits

Get a list of merge request commits. 

GET /projects/:id/merge_requests/:merge_request_iid/commits

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

Example response: 

[
  {
    "id": "ed899a2f4b50b4370feeea94676502b42383c746",
    "short_id": "ed899a2f4b5",
    "title": "Replace sanitize with escape once",
    "author_name": "Example User",
    "author_email": "user@example.com",
    "created_at": "2012-09-20T11:50:22+03:00",
    "message": "Replace sanitize with escape once"
  },
  {
    "id": "6104942438c14ec7bd21c6cd5bd995272b3faff6",
    "short_id": "6104942438c",
    "title": "Sanitize for network graph",
    "author_name": "Example User",
    "author_email": "user@example.com",
    "created_at": "2012-09-20T09:06:12+03:00",
    "message": "Sanitize for network graph"
  }
]

Get single merge request changes

caution
This endpoint was deprecated in GitLab 15.7 and is scheduled for removal in API v5. Use the List merge request diffs endpoint instead.

Shows information about the merge request including its files and changes. 

GET /projects/:id/merge_requests/:merge_request_iid/changes

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
access_raw_diffs boolean No Retrieve change diffs through Gitaly.
unidiff boolean No Present change diffs in the unified diff format. Default is false. Introduced in GitLab 16.5.

Diffs associated with the set of changes have the same size limitations applied as other diffs returned by the API or viewed through the UI. When these limits impact the results, the overflow field contains a value of true. Retrieve the diff data without these limits by adding the access_raw_diffs parameter, which accesses diffs not from the database, but from Gitaly directly. This approach is generally slower and more resource-intensive, but isn’t subject to size limits placed on database-backed diffs. Limits inherent to Gitaly still apply.

Example response: 

{
  "id": 21,
  "iid": 1,
  "project_id": 4,
  "title": "Blanditiis beatae suscipit hic assumenda et molestias nisi asperiores repellat et.",
  "state": "reopened",
  "created_at": "2015-02-02T19:49:39.159Z",
  "updated_at": "2015-02-02T20:08:49.959Z",
  "target_branch": "secret_token",
  "source_branch": "version-1-9",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "name": "Chad Hamill",
    "username": "jarrett",
    "id": 5,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/b95567800f828948baf5f4160ebb2473?s=40&d=identicon",
    "web_url" : "https://gitlab.example.com/jarrett"
  },
  "assignee": {
    "name": "Administrator",
    "username": "root",
    "id": 1,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40&d=identicon",
    "web_url" : "https://gitlab.example.com/root"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 4,
  "target_project_id": 4,
  "labels": [ ],
  "description": "Qui voluptatibus placeat ipsa alias quasi. Deleniti rem ut sint. Optio velit qui distinctio.",
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 4,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": null
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "can_be_merged",
  "subscribed" : true,
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "changes_count": "1",
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "squash": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "discussion_locked": false,
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "task_completion_status":{
    "count":0,
    "completed_count":0
  },
  "changes": [
    {
    "old_path": "VERSION",
    "new_path": "VERSION",
    "a_mode": "100644",
    "b_mode": "100644",
    "diff": "@@ -1 +1 @@\ -1.9.7\ +1.9.8",
    "new_file": false,
    "renamed_file": false,
    "deleted_file": false
    }
  ],
  "overflow": false
}

List merge request diffs

History

List diffs of the files changed in a merge request. 

GET /projects/:id/merge_requests/:merge_request_iid/diffs

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
page integer No The page of results to return. Defaults to 1.
per_page integer No The number of results per page. Defaults to 20.
unidiff boolean No Present diffs in the unified diff format. Default is false. Introduced in GitLab 16.5.

If successful, returns 200 OK and the following response attributes:

Attribute Type Description
old_path string Old path of the file.
new_path string New path of the file.
a_mode string Old file mode of the file.
b_mode string New file mode of the file.
diff string Diff representation of the changes made to the file.
new_file boolean Indicates if the file has just been added.
renamed_file boolean Indicates if the file has been renamed.
deleted_file boolean Indicates if the file has been removed.
generated_file boolean Indicates if the file is marked as generated. Introduced in GitLab 16.9.

Example request: 

curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/1/merge_requests/1/diffs?page=1&per_page=2"

Example response: 

[
  {
    "old_path": "README",
    "new_path": "README",
    "a_mode": "100644",
    "b_mode": "100644",
    "diff": "@@ -1 +1 @@\ -Title\ +README",
    "new_file": false,
    "renamed_file": false,
    "deleted_file": false,
    "generated_file": false
  },
  {
    "old_path": "VERSION",
    "new_path": "VERSION",
    "a_mode": "100644",
    "b_mode": "100644",
    "diff": "@@\ -1.9.7\ +1.9.8",
    "new_file": false,
    "renamed_file": false,
    "deleted_file": false,
    "generated_file": false
  }
]
note
This endpoint is subject to Merge requests diff limits. Merge requests that exceed the diff limits return limited results.

List merge request pipelines

Get a list of merge request pipelines. 

GET /projects/:id/merge_requests/:merge_request_iid/pipelines

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

To restrict the list of merge request pipelines, use the pagination parameters page and per_page.

Example response: 

[
  {
    "id": 77,
    "sha": "959e04d7c7a30600c894bd3c0cd0e1ce7f42c11d",
    "ref": "main",
    "status": "success"
  }
]

Create merge request pipeline

Create a new pipeline for a merge request. A pipeline created from this endpoint doesn’t run a regular branch/tag pipeline. To create jobs, configure .gitlab-ci.yml with only: [merge_requests].

The new pipeline can be: 

POST /projects/:id/merge_requests/:merge_request_iid/pipelines

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

Example response: 

{
  "id": 2,
  "sha": "b83d6e391c22777fca1ed3012fce84f633d7fed0",
  "ref": "refs/merge-requests/1/head",
  "status": "pending",
  "web_url": "http://localhost/user1/project1/pipelines/2",
  "before_sha": "0000000000000000000000000000000000000000",
  "tag": false,
  "yaml_errors": null,
  "user": {
    "id": 1,
    "name": "John Doe1",
    "username": "user1",
    "state": "active",
    "avatar_url": "https://www.gravatar.com/avatar/c922747a93b40d1ea88262bf1aebee62?s=80&d=identicon",
    "web_url": "http://example.com"
  },
  "created_at": "2019-09-04T19:20:18.267Z",
  "updated_at": "2019-09-04T19:20:18.459Z",
  "started_at": null,
  "finished_at": null,
  "committed_at": null,
  "duration": null,
  "coverage": null,
  "detailed_status": {
    "icon": "status_pending",
    "text": "pending",
    "label": "pending",
    "group": "pending",
    "tooltip": "pending",
    "has_details": false,
    "details_path": "/user1/project1/pipelines/2",
    "illustration": null,
    "favicon": "/assets/ci_favicons/favicon_status_pending-5bdf338420e5221ca24353b6bff1c9367189588750632e9a871b7af09ff6a2ae.png"
  }
}

Create MR

Creates a new merge request. 

POST /projects/:id/merge_requests
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user
source_branch string Yes The source branch.
target_branch string Yes The target branch.
title string Yes Title of MR.
allow_collaboration boolean No Allow commits from members who can merge to the target branch.
approvals_before_merge integer No Number of approvals required before this merge request can merge (see below). To configure approval rules, see Merge request approvals API. Deprecated in GitLab 16.0. Premium and Ultimate only.
allow_maintainer_to_push boolean No Alias of allow_collaboration.
assignee_id integer No Assignee user ID.
assignee_ids integer array No The ID of the users to assign the merge request to. Set to 0 or provide an empty value to unassign all assignees.
description string No Description of the merge request. Limited to 1,048,576 characters.
labels string No Labels for the merge request, as a comma-separated list. If a label does not already exist, this creates a new project label and assigns it to the merge request.
milestone_id integer No The global ID of a milestone.
remove_source_branch boolean No Flag indicating if a merge request should remove the source branch when merging.
reviewer_ids integer array No The ID of the users added as a reviewer to the merge request. If set to 0 or left empty, no reviewers are added.
squash boolean No If true, squash all commits into a single commit on merge. Project settings might override this value.
target_project_id integer No Numeric ID of the target project.

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "imported": false,
  "imported_from": "none",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "merge_error": null,
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

For important notes on response data, see Single merge request response notes.

Update MR

Updates an existing merge request. You can change the target branch, title, or even close the MR. 

PUT /projects/:id/merge_requests/:merge_request_iid
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The ID of a merge request.
add_labels string No Comma-separated label names to add to a merge request. If a label does not already exist, this creates a new project label and assigns it to the merge request.
allow_collaboration boolean No Allow commits from members who can merge to the target branch.
allow_maintainer_to_push boolean No Alias of allow_collaboration.
assignee_id integer No The ID of the user to assign the merge request to. Set to 0 or provide an empty value to unassign all assignees.
assignee_ids integer array No The ID of the users to assign the merge request to. Set to 0 or provide an empty value to unassign all assignees.
description string No Description of the merge request. Limited to 1,048,576 characters.
discussion_locked boolean No Flag indicating if the merge request’s discussion is locked. Only project members can add, edit or resolve comments to locked discussions.
labels string No Comma-separated label names for a merge request. Set to an empty string to unassign all labels. If a label does not already exist, this creates a new project label and assigns it to the merge request.
milestone_id integer No The global ID of a milestone to assign the merge request to. Set to 0 or provide an empty value to unassign a milestone.
remove_labels string No Comma-separated label names to remove from a merge request.
remove_source_branch boolean No Flag indicating if a merge request should remove the source branch when merging.
reviewer_ids integer array No The ID of the users set as a reviewer to the merge request. Set the value to 0 or provide an empty value to unset all reviewers.
squash boolean No If true, squash all commits into a single commit on merge. Project settings might override this value.
state_event string No New state (close/reopen).
target_branch string No The target branch.
title string No Title of MR.

Must include at least one non-required attribute from above.

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "merge_error": null,
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

For important notes on response data, see Single merge request response notes.

Delete a merge request

Only for administrators and project owners. Deletes the merge request in question. 

DELETE /projects/:id/merge_requests/:merge_request_iid
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request. 
curl --request DELETE \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/4/merge_requests/85"

Merge a merge request

Accept and merge changes submitted with merge request using this API. 

PUT /projects/:id/merge_requests/:merge_request_iid/merge

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
merge_commit_message string No Custom merge commit message.
merge_when_pipeline_succeeds boolean No If true, the merge request merges when the pipeline succeeds.
sha string No If present, then this SHA must match the HEAD of the source branch, otherwise the merge fails.
should_remove_source_branch boolean No If true, removes the source branch.
squash_commit_message string No Custom squash commit message.
squash boolean No If true, squash all commits into a single commit on merge.

This API returns specific HTTP status codes on failure:

HTTP Status Message Reason
401 401 Unauthorized This user does not have permission to accept this merge request.
405 405 Method Not Allowed The merge request cannot merge.
409 SHA does not match HEAD of source branch The provided sha parameter does not match the HEAD of the source.
422 Branch cannot be merged The merge request failed to merge.

For important notes on response data, see Single merge request response notes.

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "merge_error": null,
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

Merge to default merge ref path

Merge the changes between the merge request source and target branches into refs/merge-requests/:iid/merge ref, of the target project repository, if possible. This ref has the state the target branch would have if a regular merge action was taken.

This action isn’t a regular merge action, because it doesn’t change the merge request target branch state in any manner.

This ref (refs/merge-requests/:iid/merge) isn’t necessarily overwritten when submitting requests to this API, though it makes sure the ref has the latest possible state. 

GET /projects/:id/merge_requests/:merge_request_iid/merge_ref

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

This API returns specific HTTP status codes:

HTTP Status Message Reason
200 (none) Success. Returns the HEAD commit of refs/merge-requests/:iid/merge.
400 Merge request is not mergeable The merge request has conflicts.
400 Merge ref cannot be updated  
400 Unsupported operation The GitLab database is in read-only mode.

Example response: 

{
  "commit_id": "854a3a7a17acbcc0bbbea170986df1eb60435f34"
}

Cancel merge when pipeline succeeds 

POST /projects/:id/merge_requests/:merge_request_iid/cancel_merge_when_pipeline_succeeds

Supported attributes:

Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

This API returns specific HTTP status codes:

HTTP Status Message Reason
201 (none) Success, or the merge request has already merged.
406 Can't cancel the automatic merge The merge request is closed.

For important notes on response data, see Single merge request response notes.

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": false,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "merge_error": null,
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

Rebase a merge request

Automatically rebase the source_branch of the merge request against its target_branch. 

PUT /projects/:id/merge_requests/:merge_request_iid/rebase
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
skip_ci boolean No Set to true to skip creating a CI pipeline. 
curl --request PUT \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/76/merge_requests/1/rebase"

This API returns specific HTTP status codes:

HTTP Status Message Reason
202 (no message) Successfully enqueued.
403 Cannot push to source branch You don’t have permission to push to the merge request’s source branch.
403 Source branch does not exist You don’t have permission to push to the merge request’s source branch.
403 Source branch is protected from force push You don’t have permission to push to the merge request’s source branch.
409 Failed to enqueue the rebase operation A long-lived transaction might have blocked your request.

If the request is added to the queue successfully, the response contains: 

{
  "rebase_in_progress": true
}

You can poll the Get single MR endpoint with the include_rebase_in_progress parameter to check the status of the asynchronous request.

If the rebase operation is ongoing, the response includes the following: 

{
  "rebase_in_progress": true,
  "merge_error": null
}

After the rebase operation has completed successfully, the response includes the following: 

{
  "rebase_in_progress": false,
  "merge_error": null
}

If the rebase operation fails, the response includes the following: 

{
  "rebase_in_progress": false,
  "merge_error": "Rebase failed. Please rebase locally"
}

Comments on merge requests

The notes resource creates comments.

List issues that close on merge

Get all the issues that would close by merging the provided merge request. 

GET /projects/:id/merge_requests/:merge_request_iid/closes_issues
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request. 
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/76/merge_requests/1/closes_issues"

Example response when you use the GitLab issue tracker: 

[
   {
      "state" : "opened",
      "description" : "Ratione dolores corrupti mollitia soluta quia.",
      "author" : {
         "state" : "active",
         "id" : 18,
         "web_url" : "https://gitlab.example.com/eileen.lowe",
         "name" : "Alexandra Bashirian",
         "avatar_url" : null,
         "username" : "eileen.lowe"
      },
      "milestone" : {
         "project_id" : 1,
         "description" : "Ducimus nam enim ex consequatur cumque ratione.",
         "state" : "closed",
         "due_date" : null,
         "iid" : 2,
         "created_at" : "2016-01-04T15:31:39.996Z",
         "title" : "v4.0",
         "id" : 17,
         "updated_at" : "2016-01-04T15:31:39.996Z"
      },
      "project_id" : 1,
      "assignee" : {
         "state" : "active",
         "id" : 1,
         "name" : "Administrator",
         "web_url" : "https://gitlab.example.com/root",
         "avatar_url" : null,
         "username" : "root"
      },
      "updated_at" : "2016-01-04T15:31:51.081Z",
      "id" : 76,
      "title" : "Consequatur vero maxime deserunt laboriosam est voluptas dolorem.",
      "created_at" : "2016-01-04T15:31:51.081Z",
      "iid" : 6,
      "labels" : [],
      "user_notes_count": 1,
      "changes_count": "1"
   }
]

Example response when you use an external issue tracker, like Jira: 

[
   {
       "id" : "PROJECT-123",
       "title" : "Title of this issue"
   }
]

Subscribe to a merge request

Subscribes the authenticated user to a merge request to receive notification. 

POST /projects/:id/merge_requests/:merge_request_iid/subscribe
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.

If the user is already subscribed to the merge request, the endpoint returns the status code HTTP 304 Not Modified. 

curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/17/subscribe"

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

For important notes on response data, see Single merge request response notes.

Unsubscribe from a merge request

Unsubscribes the authenticated user from a merge request to not receive notifications from that merge request. 

POST /projects/:id/merge_requests/:merge_request_iid/unsubscribe
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/17/unsubscribe"

If the user is not subscribed to the merge request, the endpoint returns the status code HTTP 304 Not Modified.

Example response: 

{
  "id": 1,
  "iid": 1,
  "project_id": 3,
  "title": "test1",
  "description": "fixed login page css paddings",
  "state": "merged",
  "created_at": "2017-04-29T08:46:00Z",
  "updated_at": "2017-04-29T08:46:00Z",
  "target_branch": "main",
  "source_branch": "test1",
  "upvotes": 0,
  "downvotes": 0,
  "author": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignee": {
    "id": 1,
    "name": "Administrator",
    "username": "admin",
    "state": "active",
    "avatar_url": null,
    "web_url" : "https://gitlab.example.com/admin"
  },
  "assignees": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "reviewers": [{
    "name": "Miss Monserrate Beier",
    "username": "axel.block",
    "id": 12,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/axel.block"
  }],
  "source_project_id": 2,
  "target_project_id": 3,
  "labels": [
    "Community contribution",
    "Manage"
  ],
  "draft": false,
  "work_in_progress": false,
  "milestone": {
    "id": 5,
    "iid": 1,
    "project_id": 3,
    "title": "v2.0",
    "description": "Assumenda aut placeat expedita exercitationem labore sunt enim earum.",
    "state": "closed",
    "created_at": "2015-02-02T19:49:26.013Z",
    "updated_at": "2015-02-02T19:49:26.013Z",
    "due_date": "2018-09-22",
    "start_date": "2018-08-08",
    "web_url": "https://gitlab.example.com/my-group/my-project/milestones/1"
  },
  "merge_when_pipeline_succeeds": true,
  "merge_status": "can_be_merged",
  "detailed_merge_status": "not_open",
  "sha": "8888888888888888888888888888888888888888",
  "merge_commit_sha": null,
  "squash_commit_sha": null,
  "user_notes_count": 1,
  "discussion_locked": null,
  "should_remove_source_branch": true,
  "force_remove_source_branch": false,
  "allow_collaboration": false,
  "allow_maintainer_to_push": false,
  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
  "references": {
    "short": "!1",
    "relative": "!1",
    "full": "my-group/my-project!1"
  },
  "time_stats": {
    "time_estimate": 0,
    "total_time_spent": 0,
    "human_time_estimate": null,
    "human_total_time_spent": null
  },
  "squash": false,
  "subscribed": false,
  "changes_count": "1",
  "merged_by": { // Deprecated and will be removed in API v5, use `merge_user` instead
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merge_user": {
    "id": 87854,
    "name": "Douwe Maan",
    "username": "DouweM",
    "state": "active",
    "avatar_url": "https://gitlab.example.com/uploads/-/system/user/avatar/87854/avatar.png",
    "web_url": "https://gitlab.com/DouweM"
  },
  "merged_at": "2018-09-07T11:16:17.520Z",
  "prepared_at": "2018-09-04T11:16:17.520Z",
  "closed_by": null,
  "closed_at": null,
  "latest_build_started_at": "2018-09-07T07:27:38.472Z",
  "latest_build_finished_at": "2018-09-07T08:07:06.012Z",
  "first_deployed_to_production_at": null,
  "pipeline": {
    "id": 29626725,
    "sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "ref": "patch-28",
    "status": "success",
    "web_url": "https://gitlab.example.com/my-group/my-project/pipelines/29626725"
  },
  "diff_refs": {
    "base_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00",
    "head_sha": "2be7ddb704c7b6b83732fdd5b9f09d5a397b5f8f",
    "start_sha": "c380d3acebd181f13629a25d2e2acca46ffe1e00"
  },
  "diverged_commits_count": 2,
  "task_completion_status":{
    "count":0,
    "completed_count":0
  }
}

For important notes on response data, see Single merge request response notes.

Create a to-do item

Manually creates a to-do item for the current user on a merge request. If a to-do item already exists for the user on that merge request, this endpoint returns status code HTTP 304 Not Modified. 

POST /projects/:id/merge_requests/:merge_request_iid/todo
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/27/todo"

Example response: 

{
  "id": 113,
  "project": {
    "id": 3,
    "name": "GitLab CI/CD",
    "name_with_namespace": "GitLab Org / GitLab CI/CD",
    "path": "gitlab-ci",
    "path_with_namespace": "gitlab-org/gitlab-ci"
  },
  "author": {
    "name": "Administrator",
    "username": "root",
    "id": 1,
    "state": "active",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
    "web_url": "https://gitlab.example.com/root"
  },
  "action_name": "marked",
  "target_type": "MergeRequest",
  "target": {
    "id": 27,
    "iid": 7,
    "project_id": 3,
    "title": "Et voluptas laudantium minus nihil recusandae ut accusamus earum aut non.",
    "description": "Veniam sunt nihil modi earum cumque illum delectus. Nihil ad quis distinctio quia. Autem eligendi at quibusdam repellendus.",
    "state": "merged",
    "created_at": "2016-06-17T07:48:04.330Z",
    "updated_at": "2016-07-01T11:14:15.537Z",
    "target_branch": "allow_regex_for_project_skip_ref",
    "source_branch": "backup",
    "upvotes": 0,
    "downvotes": 0,
    "author": {
      "name": "Jarret O'Keefe",
      "username": "francisca",
      "id": 14,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/a7fa515d53450023c83d62986d0658a8?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/francisca",
      "discussion_locked": false
    },
    "assignee": {
      "name": "Dr. Gabrielle Strosin",
      "username": "barrett.krajcik",
      "id": 4,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/733005fcd7e6df12d2d8580171ccb966?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/barrett.krajcik"
    },
    "assignees": [{
      "name": "Miss Monserrate Beier",
      "username": "axel.block",
      "id": 12,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/axel.block"
    }],
    "reviewers": [{
      "name": "Miss Monserrate Beier",
      "username": "axel.block",
      "id": 12,
      "state": "active",
      "avatar_url": "http://www.gravatar.com/avatar/46f6f7dc858ada7be1853f7fb96e81da?s=80&d=identicon",
      "web_url": "https://gitlab.example.com/axel.block"
    }],
    "source_project_id": 3,
    "target_project_id": 3,
    "labels": [],
    "draft": false,
    "work_in_progress": false,
    "milestone": {
      "id": 27,
      "iid": 2,
      "project_id": 3,
      "title": "v1.0",
      "description": "Quis ea accusantium animi hic fuga assumenda.",
      "state": "active",
      "created_at": "2016-06-17T07:47:33.840Z",
      "updated_at": "2016-06-17T07:47:33.840Z",
      "due_date": null
    },
    "merge_when_pipeline_succeeds": false,
    "merge_status": "unchecked",
    "detailed_merge_status": "not_open",
    "subscribed": true,
    "sha": "8888888888888888888888888888888888888888",
    "merge_commit_sha": null,
    "squash_commit_sha": null,
    "user_notes_count": 7,
    "changes_count": "1",
    "should_remove_source_branch": true,
    "force_remove_source_branch": false,
    "squash": false,
    "web_url": "http://example.com/my-group/my-project/merge_requests/1",
    "references": {
      "short": "!1",
      "relative": "!1",
      "full": "my-group/my-project!1"
    }
  },
  "target_url": "https://gitlab.example.com/gitlab-org/gitlab-ci/merge_requests/7",
  "body": "Et voluptas laudantium minus nihil recusandae ut accusamus earum aut non.",
  "state": "pending",
  "created_at": "2016-07-01T11:14:15.530Z"
}

Get merge request diff versions

Get a list of merge request diff versions. 

GET /projects/:id/merge_requests/:merge_request_iid/versions
Attribute Type Required Description
id String Yes The ID of the project.
merge_request_iid integer Yes The internal ID of the merge request.

For an explanation of the SHAs in the response, see SHAs in the API response. 

curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/1/merge_requests/1/versions"

Example response: 

[{
  "id": 110,
  "head_commit_sha": "33e2ee8579fda5bc36accc9c6fbd0b4fefda9e30",
  "base_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "start_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "created_at": "2016-07-26T14:44:48.926Z",
  "merge_request_id": 105,
  "state": "collected",
  "real_size": "1",
  "patch_id_sha": "d504412d5b6e6739647e752aff8e468dde093f2f"
}, {
  "id": 108,
  "head_commit_sha": "3eed087b29835c48015768f839d76e5ea8f07a24",
  "base_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "start_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "created_at": "2016-07-25T14:21:33.028Z",
  "merge_request_id": 105,
  "state": "collected",
  "real_size": "1",
  "patch_id_sha": "72c30d1f0115fc1d2bb0b29b24dc2982cbcdfd32"
}]

SHAs in the API response

SHA field Purpose
base_commit_sha The merge-base commit SHA between the source branch and the target branches.
head_commit_sha The HEAD commit of the source branch.
start_commit_sha The HEAD commit SHA of the target branch when this version of the diff was created.

Get a single merge request diff version

Get a single merge request diff version. 

GET /projects/:id/merge_requests/:merge_request_iid/versions/:version_id

Supported attributes:

Attribute Type Required Description
id String Yes ID of the project.
merge_request_iid integer Yes Internal ID of the merge request.
version_id integer Yes ID of the merge request diff version.
unidiff boolean No Present diffs in the unified diff format. Default is false. Introduced in GitLab 16.5.

If successful, returns 200 OK and the following response attributes:

Attribute Type Description
id integer ID of the merge request diff version.
base_commit_sha string Merge-base commit SHA between the source branch and the target branches.
commits object array Commits in the merge request diff.
commits[].id string ID of the commit.
commits[].short_id string Short ID of the commit.
commits[].created_at datetime Identical to the committed_date field.
commits[].parent_ids array IDs of the parent commits.
commits[].title string Commit title.
commits[].message string Commit message.
commits[].author_name string Commit author’s name.
commits[].author_email string Commit author’s email address.
commits[].authored_date datetime Commit authored date.
commits[].committer_name string Name of the committer.
commits[].committer_email string Email address of the committer.
commits[].committed_date datetime Commit date.
commits[].trailers object Git trailers parsed for the commit. Duplicate keys include the last value only.
commits[].extended_trailers object Git trailers parsed for the commit.
commits[].web_url string Web URL of the merge request.
created_at datetime Creation date and time of the merge request.
diffs object array Diffs in the merge request diff version.
diffs[].diff string Content of the diff.
diffs[].new_path string New path of the file.
diffs[].old_path string Old path of the file.
diffs[].a_mode string Old file mode of the file.
diffs[].b_mode string New file mode of the file.
diffs[].new_file boolean Indicates an added file.
diffs[].renamed_file boolean Indicates a renamed file.
diffs[].deleted_file boolean Indicates a removed file.
diffs[].generated_file boolean Indicates if the file is marked as generated. Introduced in GitLab 16.9.
head_commit_sha string HEAD commit of the source branch.
merge_request_id integer ID of the merge request.
patch_id_sha string Patch ID for the merge request diff.
real_size string Number of changes in the merge request diff.
start_commit_sha string HEAD commit SHA of the target branch when this version of the diff was created.
state string State of the merge request diff. Can be collected, overflow, without_files. Deprecated values: timeout, overflow_commits_safe_size, overflow_diff_files_limit, overflow_diff_lines_limit.

Example request: 

curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/1/merge_requests/1/versions/1"

Example response: 

{
  "id": 110,
  "head_commit_sha": "33e2ee8579fda5bc36accc9c6fbd0b4fefda9e30",
  "base_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "start_commit_sha": "eeb57dffe83deb686a60a71c16c32f71046868fd",
  "created_at": "2016-07-26T14:44:48.926Z",
  "merge_request_id": 105,
  "state": "collected",
  "real_size": "1",
  "patch_id_sha": "d504412d5b6e6739647e752aff8e468dde093f2f",
  "commits": [{
    "id": "33e2ee8579fda5bc36accc9c6fbd0b4fefda9e30",
    "short_id": "33e2ee85",
    "parent_ids": [],
    "title": "Change year to 2018",
    "author_name": "Administrator",
    "author_email": "admin@example.com",
    "authored_date": "2016-07-26T17:44:29.000+03:00",
    "committer_name": "Administrator",
    "committer_email": "admin@example.com",
    "committed_date": "2016-07-26T17:44:29.000+03:00",
    "created_at": "2016-07-26T17:44:29.000+03:00",
    "message": "Change year to 2018",
    "trailers": {},
    "extended_trailers": {},
    "web_url": "https://gitlab.example.com/project/-/commit/33e2ee8579fda5bc36accc9c6fbd0b4fefda9e30"
  }, {
    "id": "aa24655de48b36335556ac8a3cd8bb521f977cbd",
    "short_id": "aa24655d",
    "parent_ids": [],
    "title": "Update LICENSE",
    "author_name": "Administrator",
    "author_email": "admin@example.com",
    "authored_date": "2016-07-25T17:21:53.000+03:00",
    "committer_name": "Administrator",
    "committer_email": "admin@example.com",
    "committed_date": "2016-07-25T17:21:53.000+03:00",
    "created_at": "2016-07-25T17:21:53.000+03:00",
    "message": "Update LICENSE",
    "trailers": {},
    "extended_trailers": {},
    "web_url": "https://gitlab.example.com/project/-/commit/aa24655de48b36335556ac8a3cd8bb521f977cbd"
  }, {
    "id": "3eed087b29835c48015768f839d76e5ea8f07a24",
    "short_id": "3eed087b",
    "parent_ids": [],
    "title": "Add license",
    "author_name": "Administrator",
    "author_email": "admin@example.com",
    "authored_date": "2016-07-25T17:21:20.000+03:00",
    "committer_name": "Administrator",
    "committer_email": "admin@example.com",
    "committed_date": "2016-07-25T17:21:20.000+03:00",
    "created_at": "2016-07-25T17:21:20.000+03:00",
    "message": "Add license",
    "trailers": {},
    "extended_trailers": {},
    "web_url": "https://gitlab.example.com/project/-/commit/3eed087b29835c48015768f839d76e5ea8f07a24"
  }],
  "diffs": [{
    "old_path": "LICENSE",
    "new_path": "LICENSE",
    "a_mode": "0",
    "b_mode": "100644",
    "diff": "@@ -0,0 +1,21 @@\n+The MIT License (MIT)\n+\n+Copyright (c) 2018 Administrator\n+\n+Permission is hereby granted, free of charge, to any person obtaining a copy\n+of this software and associated documentation files (the \"Software\"), to deal\n+in the Software without restriction, including without limitation the rights\n+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n+copies of the Software, and to permit persons to whom the Software is\n+furnished to do so, subject to the following conditions:\n+\n+The above copyright notice and this permission notice shall be included in all\n+copies or substantial portions of the Software.\n+\n+THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n+SOFTWARE.\n",
    "new_file": true,
    "renamed_file": false,
    "deleted_file": false,
    "generated_file": false
  }]
}

Set a time estimate for a merge request

Sets an estimated time of work for this merge request. 

POST /projects/:id/merge_requests/:merge_request_iid/time_estimate
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
duration string Yes The duration in human format, such as 3h30m. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/93/time_estimate?duration=3h30m"

Example response: 

{
  "human_time_estimate": "3h 30m",
  "human_total_time_spent": null,
  "time_estimate": 12600,
  "total_time_spent": 0
}

Reset the time estimate for a merge request

Resets the estimated time for this merge request to 0 seconds. 

POST /projects/:id/merge_requests/:merge_request_iid/reset_time_estimate
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of a project’s merge request. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/93/reset_time_estimate"

Example response: 

{
  "human_time_estimate": null,
  "human_total_time_spent": null,
  "time_estimate": 0,
  "total_time_spent": 0
}

Add spent time for a merge request

Adds spent time for this merge request. 

POST /projects/:id/merge_requests/:merge_request_iid/add_spent_time
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request.
duration string Yes The duration in human format, such as 3h30m
summary string No A summary of how the time was spent. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/93/add_spent_time?duration=1h"

Example response: 

{
  "human_time_estimate": null,
  "human_total_time_spent": "1h",
  "time_estimate": 0,
  "total_time_spent": 3600
}

Reset spent time for a merge request

Resets the total spent time for this merge request to 0 seconds. 

POST /projects/:id/merge_requests/:merge_request_iid/reset_spent_time
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of a project’s merge request. 
curl --request POST \
  --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/93/reset_spent_time"

Example response: 

{
  "human_time_estimate": null,
  "human_total_time_spent": null,
  "time_estimate": 0,
  "total_time_spent": 0
}

Get time tracking stats 

GET /projects/:id/merge_requests/:merge_request_iid/time_stats
Attribute Type Required Description
id integer or string Yes The ID or URL-encoded path of the project owned by the authenticated user.
merge_request_iid integer Yes The internal ID of the merge request. 
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  --url "https://gitlab.example.com/api/v4/projects/5/merge_requests/93/time_stats"

Example response: 

{
  "human_time_estimate": "2h",
  "human_total_time_spent": "1h",
  "time_estimate": 7200,
  "total_time_spent": 3600
}

Approvals

For approvals, see Merge request approvals.

List merge request state events

To track which state was set, who did it, and when it happened, check out Resource state events API.

Troubleshooting

Empty API fields for new merge requests

When you create a merge request, the diff_refs and changes_count fields are initially empty. These fields populate asynchronously after you create the merge request. For more information, see issue 386562, and the related discussion in the GitLab forums.