create_review_comment
Add a discussion comment to a GitLab merge request review to provide feedback or ask questions about code changes.
Instructions
Create a new discussion thread in a merge request review
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| merge_request_iid | Yes | Internal ID of the merge request | |
| body | Yes | Content of the new discussion comment |
Implementation Reference
- tools/reply_to_review_comment.py:57-94 (handler)The main asynchronous handler function that executes the tool logic: extracts arguments, calls GitLab API to create a merge request discussion, formats success/error response as TextContent.
async def create_review_comment(gitlab_url, project_id, access_token, args): """Create a new discussion thread in a merge request review""" logging.info(f"create_review_comment called with args: {args}") mr_iid = args["merge_request_iid"] comment_body = args["body"] try: status, response_data, error_text = await create_merge_request_discussion( gitlab_url, project_id, access_token, mr_iid, comment_body ) if status == 201: author_name = response_data.get("author", {}).get("name", "Unknown") discussion_id = response_data.get("id", "unknown") result = "✅ **New discussion created!**\n\n" result += f"**Merge Request**: !{mr_iid}\n" result += f"**Discussion ID**: `{discussion_id}`\n" result += f"**Author**: {author_name}\n" result += f"**Comment**: {comment_body[:100]}{'...' if len(comment_body) > 100 else ''}\n" return [TextContent(type="text", text=result)] else: error_msg = "❌ **Error creating discussion**\n\n" error_msg += f"**Status**: {status}\n" error_msg += f"**Error**: {error_text}\n" error_msg += f"**MR**: !{mr_iid}\n" return [TextContent(type="text", text=error_msg)] except Exception as e: logging.error(f"Unexpected error in create_review_comment: {e}") error_result = "❌ **Unexpected error**\n\n" error_result += f"**Error**: {str(e)}\n" error_result += f"**MR**: !{mr_iid}\n" return [TextContent(type="text", text=error_result)] - main.py:215-231 (schema)Input schema definition for the tool, specifying required parameters merge_request_iid (integer) and body (string), registered in the list_tools handler.
Tool( name="create_review_comment", description=("Create a new discussion thread in a " "merge request review"), inputSchema={ "type": "object", "properties": { "merge_request_iid": { "type": "integer", "minimum": 1, "description": ("Internal ID of the merge request"), }, "body": {"type": "string", "description": ("Content of the new discussion comment")}, }, "required": ["merge_request_iid", "body"], "additionalProperties": False, }, ), - main.py:336-339 (registration)Registration and dispatch logic in the call_tool handler that invokes the create_review_comment function with config and arguments when the tool name matches.
elif name == "create_review_comment": return await create_review_comment( self.config["gitlab_url"], self.config["project_id"], self.config["access_token"], arguments )