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Discussions API (FREE)

Discussions are a set of related notes on:

  • Snippets
  • Issues
  • Epics
  • Merge requests
  • Commits

This includes comments and 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.

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/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. This is 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
id integer/string yes The ID or URL-encoded path of the project
issue_iid integer yes The IID of an issue
body string yes The content of the thread
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
id integer/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 thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply
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
id integer/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 thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply 
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
id integer/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
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
id integer/string yes The ID or URL-encoded path of the project
snippet_id integer yes The ID of an snippet
discussion_id integer yes The ID of a discussion item 
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. This is 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
id integer/string yes The ID or URL-encoded path of the project
snippet_id integer yes The ID of an snippet
body string yes The content of a discussion
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
id integer/string yes The ID or URL-encoded path of the project
snippet_id integer yes The ID of an snippet
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply
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
id integer/string yes The ID or URL-encoded path of the project
snippet_id integer yes The ID of an snippet
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply 
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
id integer/string yes The ID or URL-encoded path of the project
snippet_id integer yes The ID of an snippet
discussion_id integer yes The ID of a discussion
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/snippets/11/discussions/636"

Epics (ULTIMATE)

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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic 
[
  {
    "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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic
discussion_id integer yes The ID of a discussion item 
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. This is 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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic
body string yes The content of the thread
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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply
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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string yes The content of note/reply 
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
id integer/string yes The ID or URL-encoded path of the group
epic_id integer yes The ID of an epic
discussion_id integer 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/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/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": "Merge request",
        "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": "Merge request",
        "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": "Merge request",
        "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": "Merge request",
        "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
id integer/string yes The ID or URL-encoded path of the project
merge_request_iid integer yes The IID of a merge request
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/merge_requests/11/discussions/<discussion_id>"

Create new merge request thread

The commit id entry was introduced in GitLab 13.7.

Creates a new thread to a single project merge request. This is 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
id integer/string yes The ID or URL-encoded path of the project
merge_request_iid integer yes The IID of a merge request
body string yes The content of the thread
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[base_sha] string yes Base commit SHA in the source branch
position[start_sha] string yes SHA referencing commit in target branch
position[head_sha] string yes SHA referencing HEAD of this merge request
position[position_type] string yes Type of the position reference', allowed values: text or image
position[new_path] string yes (if the position type is text) File path after change
position[new_line] integer no Line number after change (for text diff notes)
position[old_path] string yes (if the position type is text) File path before change
position[old_line] integer no Line number before change (for text diff notes)
position[line_range] hash no Line range for a multi-line diff note
position[width] integer no Width of the image (for image diff notes)
position[height] integer no Height of the image (for image diff notes)
position[x] float no X coordinate (for image diff notes)
position[y] float no Y coordinate (for image diff notes)

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. This is a bug that we plan to fix in GraphQL createDiffNote forces clients to compute redundant information (#325161).
  • If you specify incorrect base/head/start SHA parameters, you might run into the following bug: Merge request comments receive "download" link instead of inline code (#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][start] hash no Multiline note starting line
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][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.

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: [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: [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.

Prerequisite:

  • 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
merge_request_iid integer yes The IID of a merge request
discussion_id integer yes The ID of a thread
resolved boolean yes Resolve/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
id integer/string yes The ID or URL-encoded path of the project
merge_request_iid integer yes The IID of a merge request
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string yes The content of the note/reply
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
id integer/string yes The ID or URL-encoded path of the project
merge_request_iid integer yes The IID of a merge request
discussion_id integer yes The ID of a thread
note_id integer yes The ID of a thread note
body string no The content of the note/reply (exactly one of body or resolved must be set
resolved boolean no Resolve/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
id integer/string yes The ID or URL-encoded path of the project
merge_request_iid integer yes The IID of a merge request
discussion_id integer 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/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
id integer/string yes The ID or URL-encoded path of the project
commit_id string yes The SHA of a commit 
[
  {
    "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
id integer/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 discussion item 
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. This is 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
id integer/string yes The ID or URL-encoded path of the project
commit_id string yes The SHA of a commit
body string yes The content of the thread
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[base_sha] string yes SHA of the parent commit
position[start_sha] string yes SHA of the parent commit
position[head_sha] string yes The SHA of this commit (same as commit_id)
position[position_type] string yes Type of the position reference', allowed values: text or image
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[width] integer no Width of the image (for image diff notes)
position[height] integer no Height of the image (for image diff notes)
position[x] integer no X coordinate (for image diff notes)
position[y] integer no Y coordinate (for image diff notes) 
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, with the exception of base_sha, start_sha, and head_sha attributes.

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
id integer/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
body string yes The content of the note/reply
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
id integer/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
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/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"