pr_claim_work · Pr Review MCP: Risk & Policy

WHAT IT DOES

What pr_claim_work does on Pr Review

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

WHY IT NEEDS A POLICY

Why pr_claim_work needs a policy

Claiming a file partition is a reversible write-like operation that marks or reserves a unit of work for a specific reviewer/process. It does not delete data, execute code, or move money, but it does modify state (ownership/assignment of a partition) in a way that affects parallel processing coordination. Misuse could cause review tasks to be incorrectly assigned or blocked, hence medium severity.

From the tool's definition "Claim file partition for parallel PR review processing" — the tool claims/reserves a partition, which is a write/lock operation assigning work ownership.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pr_claim_work Rate-limited

pr_claim_work 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_claim_work": {
      "limits": [
        {
          "counter": "pr_claim_work_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about pr_claim_work

What does the pr_claim_work tool do? +

Claim file partition for parallel PR review processing. It is categorised as a Write tool in the Pr Review 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_claim_work? +

Register the Pr Review MCP server in PolicyLayer and add a rule for pr_claim_work: 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 Pr Review. Nothing to install.

What risk level is pr_claim_work? +

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

Can I rate-limit pr_claim_work? +

Yes. Add a rate_limit block to the pr_claim_work 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_claim_work completely? +

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

pr_claim_work is provided by the Pr Review MCP server (thebtf/pr-review-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.