create-draft-note · GitLab Code Review MCP Server MCP

WHAT IT DOES

What create-draft-note does on GitLab Code Review MCP Server

AI agents use create-draft-note to create or update resources in GitLab Code Review MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GitLab Code Review MCP Server environment.

WHY IT NEEDS A POLICY

Why create-draft-note needs a policy

This tool creates new data (draft notes/comments) in GitLab, which is reversible through deletion or editing. It does not execute code, delete data, or move money. The blast radius is medium because a malicious agent could inject misleading code review comments that delay or misdirect legitimate review processes, but the impact is limited to a single merge request and is easily correctable.

From the tool's definition The tool description states it can 'Create a draft note for a merge request in GitLab'. Creating new content (draft notes) is a write operation that modifies the merge request state by adding reviewer comments.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-draft-note Rate-limited

create-draft-note stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create-draft-note": {
      "limits": [
        {
          "counter": "create-draft-note_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches GitLab Code Review MCP Server, so you can run agents against it safely.

FAQ

Questions about create-draft-note

What does the create-draft-note tool do? +

Create a draft note for a merge request in GitLab. It is categorised as a Write tool in the GitLab Code Review MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-draft-note? +

Register the GitLab Code Review MCP Server MCP server in PolicyLayer and add a rule for create-draft-note: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches GitLab Code Review MCP Server. Nothing to install.

What risk level is create-draft-note? +

create-draft-note is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create-draft-note? +

Yes. Add a rate_limit block to the create-draft-note rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block create-draft-note completely? +

Set action: deny in the PolicyLayer policy for create-draft-note. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides create-draft-note? +

create-draft-note is provided by the GitLab Code Review MCP Server MCP server (thaihoangminh/code-review-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.