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Discussions API

DETAILS: Tier: Free, Premium, Ultimate Offering: GitLab.com, Self-managed, GitLab Dedicated

Discussions are attached to:

  • Snippets
  • Issues
  • Epics
  • Merge requests
  • Commits

This includes comments, threads, and system notes. System notes are notes about changes to the object (for example, when a milestone changes).

Label notes are not part of this API, but recorded as separate events in resource label events.

Understand note types in the API

Not all discussion types are equally available in the API:

  • Note: A comment left on the root of an issue, merge request, commit, or snippet.
  • Discussion: A collection, often called a thread, of DiscussionNotes in an issue, merge request, commit, or snippet.
  • DiscussionNote: An individual item in a discussion on an issue, merge request, commit, or snippet. These are not returned as part of the Note API. Not available in the Events API.

Discussions pagination

By default, GET requests return 20 results at a time because the API results are paginated.

Read more on pagination.

Issues

List project issue discussion items

Gets a list of all discussion items for a single issue.

GET /projects/:id/issues/:issue_iid/discussions
Attribute Type Required Description
id integer/string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue. 
[
  {
    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
    "individual_note": false,
    "notes": [
      {
        "id": 1126,
        "type": "DiscussionNote",
        "body": "discussion text",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-03T21:54:39.668Z",
        "updated_at": "2018-03-03T21:54:39.668Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Issue",
        "project_id": 5,
        "noteable_iid": null
      },
      {
        "id": 1129,
        "type": "DiscussionNote",
        "body": "reply to the discussion",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T13:38:02.127Z",
        "updated_at": "2018-03-04T13:38:02.127Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Issue",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  },
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": true,
    "notes": [
      {
        "id": 1128,
        "type": null,
        "body": "a single comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Issue",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  }
]
curl --header "PRIVATE-TOKEN: <your_access_token>"\
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions"

Get single issue discussion item

Returns a single discussion item for a specific project issue.

GET /projects/:id/issues/:issue_iid/discussions/:discussion_id

Parameters:

Attribute Type Required Description
id integer or string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue.
discussion_id integer yes The ID of a discussion item. 
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions/<discussion_id>"

Create new issue thread

Creates a new thread to a single project issue. Similar to creating a note, but other comments (replies) can be added to it later.

POST /projects/:id/issues/:issue_iid/discussions

Parameters:

Attribute Type Required Description
body string yes The content of the thread.
id integer or string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions?body=comment"

Add note to existing issue thread

Adds a new note to the thread. This can also create a thread from a single comment.

WARNING: Notes can be added to other items than comments, such as system notes, making them threads.

POST /projects/:id/issues/:issue_iid/discussions/:discussion_id/notes

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
discussion_id integer yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue.
note_id integer yes The ID of a thread note.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions/<discussion_id>/notes?body=comment"

Modify existing issue thread note

Modify existing thread note of an issue.

PUT /projects/:id/issues/:issue_iid/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
discussion_id integer yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue.
note_id integer yes The ID of a thread note. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions/<discussion_id>/notes/1108?body=comment"

Delete an issue thread note

Deletes an existing thread note of an issue.

DELETE /projects/:id/issues/:issue_iid/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
discussion_id integer yes The ID of a discussion.
id integer or string yes The ID or URL-encoded path of the project.
issue_iid integer yes The IID of an issue.
note_id integer yes The ID of a discussion note. 
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/issues/11/discussions/636"

Snippets

List project snippet discussion items

Gets a list of all discussion items for a single snippet.

GET /projects/:id/snippets/:snippet_id/discussions
Attribute Type Required Description
id integer/string yes The ID or URL-encoded path of the project.
snippet_id integer yes The ID of an snippet. 
[
  {
    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
    "individual_note": false,
    "notes": [
      {
        "id": 1126,
        "type": "DiscussionNote",
        "body": "discussion text",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-03T21:54:39.668Z",
        "updated_at": "2018-03-03T21:54:39.668Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Snippet",
        "project_id": 5,
        "noteable_iid": null
      },
      {
        "id": 1129,
        "type": "DiscussionNote",
        "body": "reply to the discussion",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T13:38:02.127Z",
        "updated_at": "2018-03-04T13:38:02.127Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Snippet",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  },
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": true,
    "notes": [
      {
        "id": 1128,
        "type": null,
        "body": "a single comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Snippet",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  }
]
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions"

Get single snippet discussion item

Returns a single discussion item for a specific project snippet.

GET /projects/:id/snippets/:snippet_id/discussions/:discussion_id

Parameters:

Attribute Type Required Description
discussion_id integer yes The ID of a discussion item.
id integer or string yes The ID or URL-encoded path of the project.
snippet_id integer yes The ID of an snippet. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions/<discussion_id>"

Create new snippet thread

Creates a new thread to a single project snippet. Similar to creating a note, but other comments (replies) can be added to it later.

POST /projects/:id/snippets/:snippet_id/discussions

Parameters:

Attribute Type Required Description
body string yes The content of a discussion.
id integer or string yes The ID or URL-encoded path of the project.
snippet_id integer yes The ID of an snippet.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>"\
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions?body=comment"

Add note to existing snippet thread

Adds a new note to the thread.

POST /projects/:id/snippets/:snippet_id/discussions/:discussion_id/notes

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
discussion_id integer yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
note_id integer yes The ID of a thread note.
snippet_id integer yes The ID of an snippet.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions/<discussion_id>/notes?body=comment"

Modify existing snippet thread note

Modify existing thread note of a snippet.

PUT /projects/:id/snippets/:snippet_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
discussion_id integer yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
note_id integer yes The ID of a thread note.
snippet_id integer yes The ID of an snippet. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions/<discussion_id>/notes/1108?body=comment"

Delete a snippet thread note

Deletes an existing thread note of a snippet.

DELETE /projects/:id/snippets/:snippet_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
discussion_id integer yes The ID of a discussion.
id integer or string yes The ID or URL-encoded path of the project.
note_id integer yes The ID of a discussion note.
snippet_id integer yes The ID of an snippet. 
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/snippets/11/discussions/636"

Epics

DETAILS: Tier: Ultimate Offering: GitLab.com, Self-managed, GitLab Dedicated

List group epic discussion items

Gets a list of all discussion items for a single epic.

GET /groups/:id/epics/:epic_id/discussions
Attribute Type Required Description
epic_id integer yes The ID of an epic.
id integer or string yes The ID or URL-encoded path of the group. 
[
  {
    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
    "individual_note": false,
    "notes": [
      {
        "id": 1126,
        "type": "DiscussionNote",
        "body": "discussion text",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-03T21:54:39.668Z",
        "updated_at": "2018-03-03T21:54:39.668Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Epic",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      },
      {
        "id": 1129,
        "type": "DiscussionNote",
        "body": "reply to the discussion",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T13:38:02.127Z",
        "updated_at": "2018-03-04T13:38:02.127Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Epic",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  },
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": true,
    "notes": [
      {
        "id": 1128,
        "type": null,
        "body": "a single comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Epic",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  }
]
curl --header "PRIVATE-TOKEN: <your_access_token>"\
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions"

Get single epic discussion item

Returns a single discussion item for a specific group epic.

GET /groups/:id/epics/:epic_id/discussions/:discussion_id

Parameters:

Attribute Type Required Description
discussion_id integer yes The ID of a discussion item.
epic_id integer yes The ID of an epic.
id integer or string yes The ID or URL-encoded path of the group. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions/<discussion_id>"

Create new epic thread

Creates a new thread to a single group epic. Similar to creating a note, but other comments (replies) can be added to it later.

POST /groups/:id/epics/:epic_id/discussions

Parameters:

Attribute Type Required Description
body string yes The content of the thread.
epic_id integer yes The ID of an epic.
id integer or string yes The ID or URL-encoded path of the group.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions?body=comment"

Add note to existing epic thread

Adds a new note to the thread. This can also create a thread from a single comment.

POST /groups/:id/epics/:epic_id/discussions/:discussion_id/notes

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
discussion_id integer yes The ID of a thread.
epic_id integer yes The ID of an epic.
id integer or string yes The ID or URL-encoded path of the group.
note_id integer yes The ID of a thread note.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions/<discussion_id>/notes?body=comment"

Modify existing epic thread note

Modify existing thread note of an epic.

PUT /groups/:id/epics/:epic_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
body string yes The content of note or reply.
discussion_id integer yes The ID of a thread.
epic_id integer yes The ID of an epic.
id integer/string yes The ID or URL-encoded path of the group.
note_id integer yes The ID of a thread note. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions/<discussion_id>/notes/1108?body=comment"

Delete an epic thread note

Deletes an existing thread note of an epic.

DELETE /groups/:id/epics/:epic_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
discussion_id integer yes The ID of a thread.
epic_id integer yes The ID of an epic.
id integer or string yes The ID or URL-encoded path of the group.
note_id integer yes The ID of a thread note. 
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/groups/5/epics/11/discussions/636"

Merge requests

List project merge request discussion items

Gets a list of all discussion items for a single merge request.

GET /projects/:id/merge_requests/:merge_request_iid/discussions
Attribute Type Required Description
id integer or string yes The ID or URL-encoded path of the project.
merge_request_iid integer yes The IID of a merge request. 
[
  {
    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
    "individual_note": false,
    "notes": [
      {
        "id": 1126,
        "type": "DiscussionNote",
        "body": "discussion text",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-03T21:54:39.668Z",
        "updated_at": "2018-03-03T21:54:39.668Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "MergeRequest",
        "project_id": 5,
        "noteable_iid": null,
        "resolved": false,
        "resolvable": true,
        "resolved_by": null,
        "resolved_at": null
      },
      {
        "id": 1129,
        "type": "DiscussionNote",
        "body": "reply to the discussion",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T13:38:02.127Z",
        "updated_at": "2018-03-04T13:38:02.127Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "MergeRequest",
        "project_id": 5,
        "noteable_iid": null,
        "resolved": false,
        "resolvable": true,
        "resolved_by": null
      }
    ]
  },
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": true,
    "notes": [
      {
        "id": 1128,
        "type": null,
        "body": "a single comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "MergeRequest",
        "project_id": 5,
        "noteable_iid": null,
        "resolved": false,
        "resolvable": true,
        "resolved_by": null
      }
    ]
  }
]

Diff comments also contain position:

[
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": false,
    "notes": [
      {
        "id": 1128,
        "type": "DiffNote",
        "body": "diff comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "MergeRequest",
        "project_id": 5,
        "noteable_iid": null,
        "commit_id": "4803c71e6b1833ca72b8b26ef2ecd5adc8a38031",
        "position": {
          "base_sha": "b5d6e7b1613fca24d250fa8e5bc7bcc3dd6002ef",
          "start_sha": "7c9c2ead8a320fb7ba0b4e234bd9529a2614e306",
          "head_sha": "4803c71e6b1833ca72b8b26ef2ecd5adc8a38031",
          "old_path": "package.json",
          "new_path": "package.json",
          "position_type": "text",
          "old_line": 27,
          "new_line": 27,
          "line_range": {
            "start": {
              "line_code": "588440f66559714280628a4f9799f0c4eb880a4a_10_10",
              "type": "new"
            },
            "end": {
              "line_code": "588440f66559714280628a4f9799f0c4eb880a4a_11_11",
              "type": "old"
            }
          }
        },
        "resolved": false,
        "resolvable": true,
        "resolved_by": null
      }
    ]
  }
]
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions"

Get single merge request discussion item

Returns a single discussion item for a specific project merge request.

GET /projects/:id/merge_requests/:merge_request_iid/discussions/:discussion_id

Parameters:

Attribute Type Required Description
discussion_id string yes The ID of a discussion item.
id integer or string yes The ID or URL-encoded path of the project.
merge_request_iid integer yes The IID of a merge request. 
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/<discussion_id>"

Create new merge request thread

Creates a new thread to a single project merge request. Similar to creating a note but other comments (replies) can be added to it later. For other approaches, see Post comment to commit in the Commits API, and Create new merge request note in the Notes API.

POST /projects/:id/merge_requests/:merge_request_iid/discussions

Parameters for all comments:

Attribute Type Required Description
body string yes The content of the thread.
id integer/string yes The ID or URL-encoded path of the project.
merge_request_iid integer yes The IID of a merge request.
position[base_sha] string yes (if position* is supplied) Base commit SHA in the source branch.
position[head_sha] string yes (if position* is supplied) SHA referencing HEAD of this merge request.
position[start_sha] string yes (if position* is supplied) SHA referencing commit in target branch.
position[new_path] string yes (if the position type is text) File path after change.
position[old_path] string yes (if the position type is text) File path before change.
position[position_type] string yes (if position* is supplied) Type of the position reference. Allowed values: text, image, or file. file introduced in GitLab 16.4.
commit_id string no SHA referencing commit to start this thread on.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights.
position hash no Position when creating a diff note.
position[new_line] integer no For text diff notes, the line number after change.
position[old_line] integer no For text diff notes, the line number before change.
position[line_range] hash no Line range for a multi-line diff note.
position[width] integer no For image diff notes, width of the image.
position[height] integer no For image diff notes, height of the image.
position[x] float no For image diff notes, X coordinate.
position[y] float no For image diff notes, Y coordinate.

Create a new thread on the overview page

curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions?body=comment"

Create a new thread in the merge request diff

  • Both position[old_path] and position[new_path] are required and must refer to the file path before and after the change.
  • To create a thread on an added line (highlighted in green in the merge request diff), use position[new_line] and don't include position[old_line].
  • To create a thread on a removed line (highlighted in red in the merge request diff), use position[old_line] and don't include position[new_line].
  • To create a thread on an unchanged line, include both position[new_line] and position[old_line] for the line. These positions might not be the same if earlier changes in the file changed the line number. For the discussion about a fix, see issue 32516.
  • If you specify incorrect base, head, start, or SHA parameters, you might run into the bug described in issue #296829).

To create a new thread:

  1. Get the latest merge request version:

    curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/versions"

  2. Note the details of the latest version, which is listed first in the response array.

    [
  {
    "id": 164560414,
    "head_commit_sha": "f9ce7e16e56c162edbc9e480108041cf6b0291fe",
    "base_commit_sha": "5e6dffa282c5129aa67cd227a0429be21bfdaf80",
    "start_commit_sha": "5e6dffa282c5129aa67cd227a0429be21bfdaf80",
    "created_at": "2021-03-30T09:18:27.351Z",
    "merge_request_id": 93958054,
    "state": "collected",
    "real_size": "2"
  },
  "previous versions are here"
]

  3. Create a new diff thread. This example creates a thread on an added line:

    curl --request POST --header "PRIVATE-TOKEN: <your_access_token>"\
  --form 'position[position_type]=text'\
  --form 'position[base_sha]=<use base_commit_sha from the versions response>'\
  --form 'position[head_sha]=<use head_commit_sha from the versions response>'\
  --form 'position[start_sha]=<use start_commit_sha from the versions response>'\
  --form 'position[new_path]=file.js'\
  --form 'position[old_path]=file.js'\
  --form 'position[new_line]=18'\
  --form 'body=test comment body'\
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions"

Parameters for multiline comments

Parameters for multiline comments only:

Attribute Type Required Description
position[line_range][end][line_code] string yes Line code for the end line.
position[line_range][end][type] string yes Use new for lines added by this commit, otherwise old.
position[line_range][start][line_code] string yes Line code for the start line.
position[line_range][start][type] string yes Use new for lines added by this commit, otherwise old.
position[line_range][end] hash no Multiline note ending line.
position[line_range][start] hash no Multiline note starting line.

Line code

A line code is of the form <SHA>_<old>_<new>, like this: adc83b19e793491b1c6ea0fd8b46cd9f32e292fc_5_5

  • <SHA> is the SHA1 hash of the filename.
  • <old> is the line number before the change.
  • <new> is the line number after the change.

For example, if a commit (<COMMIT_ID>) deletes line 463 in the README, you can comment on the deletion by referencing line 463 in the old file:

curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  --form "note=Very clever to remove this unnecessary line!" \
  --form "path=README" --form "line=463" --form "line_type=old" \
  "https://gitlab.com/api/v4/projects/47/repository/commits/<COMMIT_ID>/comments"

If a commit (<COMMIT_ID>) adds line 157 to hello.rb, you can comment on the addition by referencing line 157 in the new file:

curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  --form "note=This is brilliant!" --form "path=hello.rb" \
  --form "line=157" --form "line_type=new" \
  "https://gitlab.com/api/v4/projects/47/repository/commits/<COMMIT_ID>/comments"

Resolve a merge request thread

Resolve or unresolve a thread of discussion in a merge request.

Prerequisites:

  • You must have at least the Developer role, or be the author of the change being reviewed.
PUT /projects/:id/merge_requests/:merge_request_iid/discussions/:discussion_id

Parameters:

Attribute Type Required Description
id integer/string yes The ID or URL-encoded path of the project.
discussion_id string yes The ID of a thread.
merge_request_iid integer yes The IID of a merge request.
resolved boolean yes Resolve or unresolve the discussion. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/<discussion_id>?resolved=true"

Add note to existing merge request thread

Adds a new note to the thread. This can also create a thread from a single comment.

POST /projects/:id/merge_requests/:merge_request_iid/discussions/:discussion_id/notes

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
id integer/string yes The ID or URL-encoded path of the project.
discussion_id string yes The ID of a thread.
merge_request_iid integer yes The IID of a merge request.
note_id integer yes The ID of a thread note.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/<discussion_id>/notes?body=comment"

Modify an existing merge request thread note

Modify or resolve an existing thread note of a merge request.

PUT /projects/:id/merge_requests/:merge_request_iid/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
discussion_id string yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
merge_request_iid integer yes The IID of a merge request.
note_id integer yes The ID of a thread note.
body string no The content of the note or reply. Exactly one of body or resolved must be set.
resolved boolean no Resolve or unresolve the note. Exactly one of body or resolved must be set. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/<discussion_id>/notes/1108?body=comment"

Resolving a note:

curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/<discussion_id>/notes/1108?resolved=true"

Delete a merge request thread note

Deletes an existing thread note of a merge request.

DELETE /projects/:id/merge_requests/:merge_request_iid/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
discussion_id string yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
merge_request_iid integer yes The IID of a merge request.
note_id integer yes The ID of a thread note. 
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/merge_requests/11/discussions/636"

Commits

List project commit discussion items

Gets a list of all discussion items for a single commit.

GET /projects/:id/repository/commits/:commit_id/discussions
Attribute Type Required Description
commit_id string yes The SHA of a commit.
id integer or string yes The ID or URL-encoded path of the project. 
[
  {
    "id": "6a9c1750b37d513a43987b574953fceb50b03ce7",
    "individual_note": false,
    "notes": [
      {
        "id": 1126,
        "type": "DiscussionNote",
        "body": "discussion text",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-03T21:54:39.668Z",
        "updated_at": "2018-03-03T21:54:39.668Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Commit",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      },
      {
        "id": 1129,
        "type": "DiscussionNote",
        "body": "reply to the discussion",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T13:38:02.127Z",
        "updated_at": "2018-03-04T13:38:02.127Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Commit",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  },
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": true,
    "notes": [
      {
        "id": 1128,
        "type": null,
        "body": "a single comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Commit",
        "project_id": 5,
        "noteable_iid": null,
        "resolvable": false
      }
    ]
  }
]

Diff comments contain also position:

[
  {
    "id": "87805b7c09016a7058e91bdbe7b29d1f284a39e6",
    "individual_note": false,
    "notes": [
      {
        "id": 1128,
        "type": "DiffNote",
        "body": "diff comment",
        "attachment": null,
        "author": {
          "id": 1,
          "name": "root",
          "username": "root",
          "state": "active",
          "avatar_url": "https://www.gravatar.com/avatar/00afb8fb6ab07c3ee3e9c1f38777e2f4?s=80&d=identicon",
          "web_url": "http://localhost:3000/root"
        },
        "created_at": "2018-03-04T09:17:22.520Z",
        "updated_at": "2018-03-04T09:17:22.520Z",
        "system": false,
        "noteable_id": 3,
        "noteable_type": "Commit",
        "project_id": 5,
        "noteable_iid": null,
        "position": {
          "base_sha": "b5d6e7b1613fca24d250fa8e5bc7bcc3dd6002ef",
          "start_sha": "7c9c2ead8a320fb7ba0b4e234bd9529a2614e306",
          "head_sha": "4803c71e6b1833ca72b8b26ef2ecd5adc8a38031",
          "old_path": "package.json",
          "new_path": "package.json",
          "position_type": "text",
          "old_line": 27,
          "new_line": 27
        },
        "resolvable": false
      }
    ]
  }
]
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions"

Get single commit discussion item

Returns a single discussion item for a specific project commit

GET /projects/:id/repository/commits/:commit_id/discussions/:discussion_id

Parameters:

Attribute Type Required Description
commit_id string yes The SHA of a commit.
discussion_id string yes The ID of a discussion item.
id integer or string yes The ID or URL-encoded path of the project. 
curl --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions/<discussion_id>"

Create new commit thread

Creates a new thread to a single project commit. Similar to creating a note but other comments (replies) can be added to it later.

POST /projects/:id/repository/commits/:commit_id/discussions

Parameters:

Attribute Type Required Description
body string yes The content of the thread.
commit_id string yes The SHA of a commit.
id integer/string yes The ID or URL-encoded path of the project.
position[base_sha] string yes (if position* is supplied) SHA of the parent commit.
position[head_sha] string yes (if position* is supplied) The SHA of this commit. Same as commit_id.
position[start_sha] string yes (if position* is supplied) SHA of the parent commit.
position[position_type] string yes (if position* is supplied) Type of the position reference. Allowed values: text, image, or file. file introduced in GitLab 16.4.
created_at string no Date time string, ISO 8601 formatted, such as 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights.
position hash no Position when creating a diff note.

| position[new_path] | string | no | File path after change. | | position[new_line] | integer | no | Line number after change. | | position[old_path] | string | no | File path before change. | | position[old_line] | integer | no | Line number before change. | | position[height] | integer | no | For image diff notes, image height. | | position[width] | integer | no | For image diff notes, image width. | | position[x] | integer | no | For image diff notes, X coordinate. | | position[y] | integer | no | For image diff notes, Y coordinate. |

curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions?body=comment"

The rules for creating the API request are the same as when creating a new thread in the merge request diff. The exceptions:

  • base_sha
  • head_sha
  • start_sha

Add note to existing commit thread

Adds a new note to the thread.

POST /projects/:id/repository/commits/:commit_id/discussions/:discussion_id/notes

Parameters:

Attribute Type Required Description
body string yes The content of the note or reply.
commit_id string yes The SHA of a commit.
discussion_id string yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
note_id integer yes The ID of a thread note.
created_at string no Date time string, ISO 8601 formatted, such 2016-03-11T03:45:40Z. Requires administrator or project/group owner rights. 
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions/<discussion_id>/notes?body=comment

Modify an existing commit thread note

Modify or resolve an existing thread note of a commit.

PUT /projects/:id/repository/commits/:commit_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
commit_id string yes The SHA of a commit.
discussion_id string yes The ID of a thread.
id integer or string yes The ID or URL-encoded path of the project.
note_id integer yes The ID of a thread note.
body string no The content of a note. 
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions/<discussion_id>/notes/1108?body=comment"

Resolving a note:

curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions/<discussion_id>/notes/1108?resolved=true"

Delete a commit thread note

Deletes an existing thread note of a commit.

DELETE /projects/:id/repository/commits/:commit_id/discussions/:discussion_id/notes/:note_id

Parameters:

Attribute Type Required Description
id integer or string yes The ID or URL-encoded path of the project.
commit_id string yes The SHA of a commit.
discussion_id string yes The ID of a thread.
note_id integer yes The ID of a thread note. 
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" \
  "https://gitlab.example.com/api/v4/projects/5/repository/commits/<commit_id>/discussions/<discussion_id>/notes/636"