pr-review

Submits a review on a pull request (approve, request-changes, or comment). Returns structured data with the review event, URL, and body echo.

SERVERCargo SOURCEDave-London/Pare

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-dave-london-cargo/pr-review.md

WHAT IT DOES

What pr-review does on Cargo

AI agents use pr-review to create or update resources in Cargo, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Cargo environment.

RISK

Why pr-review is rated Medium

This tool writes a review to a pull request, which can approve or request changes — a reversible but consequential action that could affect code merging decisions. It does not delete data, execute code, or involve finances, so Write is the most appropriate category. Severity is high because approving PRs on behalf of an AI agent could allow malicious or buggy code to be merged into a codebase.

From the tool's definition Submits a review on a pull request (approve, request-changes, or comment)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pr-review safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Cargo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pr-review, this is the rule to start with:

pr-review Rate-limited

pr-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": {
    "pr-review": {
      "limits": [
        {
          "counter": "pr-review_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Cargo, apply this rule, and every pr-review call is checked against it from then on.

FAQ

Questions about pr-review

What does the pr-review tool do? +

Submits a review on a pull request (approve, request-changes, or comment). Returns structured data with the review event, URL, and body echo. It is categorised as a Write tool in the Cargo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pr-review? +

Register the Cargo MCP server in PolicyLayer and add a rule for pr-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 Cargo. Nothing to install.

What risk level is pr-review? +

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

Can I rate-limit pr-review? +

Yes. Add a rate_limit block to the pr-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 pr-review completely? +

Set action: deny in the PolicyLayer policy for pr-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 pr-review? +

pr-review is provided by the Cargo MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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