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Comment Create

Linear

Create a comment on an issue in a connected Linear workspace.

Capability
Issue management
Current price
$0.0050/call
Availability
Connected app
Last accepted verification

What this API does

Creates one Markdown comment through a fixed GraphQL mutation. An optional parent comment id creates a threaded reply; the tool cannot edit, resolve or delete comments. Always one upstream request at $0.0050.

Agents select this operation with tool ID linear.comment-create, then inspect its current executable contract before a run.

Public input and output shape

Input

bodyobject · required

Bounded request body sent to the connected application.

Output

dataobject

Returned data value.

Example request and output

This reviewed worked example is shared with inspect. Inspect also returns the current executable schema and price estimate before a paid run.

Request

{
  "tool_id": "linear.comment-create",
  "input": {
    "body": {
      "input": {
        "body": "Please add the provider-cost assumptions and rollback steps before review.",
        "issueId": "YOUR-LINEAR-ISSUE-ID"
      }
    }
  }
}

Output

{
  "data": {
    "commentCreate": {
      "comment": {
        "id": "77777777-8888-4999-8aaa-111111111112",
        "body": "Please add the provider-cost assumptions and rollback steps before review.",
        "issue": {
          "id": "11111111-2222-4333-8444-555555555556",
          "identifier": "ENG-42"
        }
      },
      "success": true
    }
  }
}
Teaching errors and limitations
  • connection_required: This capability acts on your own Linear workspace, which isn't connected yet.Open connect_url, approve read and write access, then retry this run unchanged.
  • invalid_input: Linear requires an issue UUID and non-empty comment body.example: {"body":{"input":{"issueId":"issue-uuid","body":"I reproduced this."}}}
Updated
18 August 2026

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