create_pr · Pr MCP: Risk & Policy

WHAT IT DOES

What create_pr does on Pr

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

WHY IT NEEDS A POLICY

Why create_pr needs a policy

An AI agent can call create_pr faster than any human can review — one bad instruction and it creates or modifies resources in Pr by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_pr Rate-limited

create_pr 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_pr": {
      "limits": [
        {
          "counter": "create_pr_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 Pr, so you can run agents against it safely.

FAQ

Questions about create_pr

What does the create_pr tool do? +

Creates a Pull Request on GitHub WITHOUT AI review. RECOMMENDED WORKFLOW: (1) Call. It is categorised as a Write tool in the Pr 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_pr? +

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

What risk level is create_pr? +

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

Can I rate-limit create_pr? +

Yes. Add a rate_limit block to the create_pr 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_pr completely? +

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

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