dismiss_pull_request_review · Mcp Github MCP: Risk & Policy

WHAT IT DOES

What dismiss_pull_request_review does on Mcp Github

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

WHY IT NEEDS A POLICY

Why dismiss_pull_request_review needs a policy

Dismissing a pull request review modifies the state of an existing review (marking it as dismissed), which is a reversible write operation. It does not delete data permanently, but it does alter the review workflow. Misuse could suppress legitimate blocking reviews, enabling unreviewed code to be merged.

From the tool's definition dismiss_pull_request_review / Dismiss a pull request review

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dismiss_pull_request_review Rate-limited

dismiss_pull_request_review 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": {
    "dismiss_pull_request_review": {
      "limits": [
        {
          "counter": "dismiss_pull_request_review_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 Github, so you can run agents against it safely.

FAQ

Questions about dismiss_pull_request_review

What does the dismiss_pull_request_review tool do? +

Dismiss a pull request review. It is categorised as a Write tool in the Mcp Github MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on dismiss_pull_request_review? +

Register the Mcp Github MCP server in PolicyLayer and add a rule for dismiss_pull_request_review: 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 Github. Nothing to install.

What risk level is dismiss_pull_request_review? +

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

Can I rate-limit dismiss_pull_request_review? +

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

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

dismiss_pull_request_review is provided by the Mcp Github MCP server (@missionsquad/mcp-github). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.