create_issue_note_tool · MCP Gitlab MCP: Risk & Policy

WHAT IT DOES

What create_issue_note_tool does on MCP Gitlab

AI agents use create_issue_note_tool to create or update resources in MCP Gitlab — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP Gitlab environment.

WHY IT NEEDS A POLICY

Why create_issue_note_tool needs a policy

This tool creates new content (a comment/note) on an issue, which is a Write operation. It is reversible (comments can be edited or deleted), carries minimal risk, and does not execute code, delete data, or move funds. The blast radius is limited to adding text to an issue thread.

From the tool's definition Tool name 'create_issue_note_tool' and description 'Create a note (comment) on an issue' indicate creating/adding a comment, which is a reversible data modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_issue_note_tool Rate-limited

create_issue_note_tool 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_issue_note_tool": {
      "limits": [
        {
          "counter": "create_issue_note_tool_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 MCP Gitlab, so you can run agents against it safely.

FAQ

Questions about create_issue_note_tool

What does the create_issue_note_tool tool do? +

Create a note (comment) on an issue. It is categorised as a Write tool in the MCP Gitlab 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_issue_note_tool? +

Register the MCP Gitlab MCP server in PolicyLayer and add a rule for create_issue_note_tool: 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 MCP Gitlab. Nothing to install.

What risk level is create_issue_note_tool? +

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

Can I rate-limit create_issue_note_tool? +

Yes. Add a rate_limit block to the create_issue_note_tool 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_issue_note_tool completely? +

Set action: deny in the PolicyLayer policy for create_issue_note_tool. 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_issue_note_tool? +

create_issue_note_tool is provided by the MCP Gitlab MCP server (mcp-gitlab-crunchtools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.