youtrack_update_comment · YouTrack MCP Server MCP

WHAT IT DOES

What youtrack_update_comment does on YouTrack MCP Server

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

WHY IT NEEDS A POLICY

Why youtrack_update_comment needs a policy

This tool modifies existing data (a comment) in a reversible manner. It falls squarely into the Write category. Severity is medium because unauthorized comment updates could alter project history, mislead team members, or corrupt audit trails, but the blast radius is limited to a single comment's content rather than cascading system effects.

From the tool's definition Tool name "youtrack_update_comment" and description "Update an existing comment" indicate modification of existing data. The action is reversible (comments can be updated again or reverted), and does not involve deletion or financial operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

youtrack_update_comment Rate-limited

youtrack_update_comment 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": {
    "youtrack_update_comment": {
      "limits": [
        {
          "counter": "youtrack_update_comment_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 YouTrack MCP Server, so you can run agents against it safely.

FAQ

Questions about youtrack_update_comment

What does the youtrack_update_comment tool do? +

Update an existing comment. It is categorised as a Write tool in the YouTrack 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 youtrack_update_comment? +

Register the YouTrack MCP Server MCP server in PolicyLayer and add a rule for youtrack_update_comment: 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 YouTrack MCP Server. Nothing to install.

What risk level is youtrack_update_comment? +

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

Can I rate-limit youtrack_update_comment? +

Yes. Add a rate_limit block to the youtrack_update_comment 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 youtrack_update_comment completely? +

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

youtrack_update_comment is provided by the YouTrack MCP Server MCP server (lucyfuur94/youtrack-integration). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.