gh_pr_create · GitHub CLI MCP Server MCP: Risk & Policy

WHAT IT DOES

What gh_pr_create does on GitHub CLI MCP Server

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

WHY IT NEEDS A POLICY

Why gh_pr_create needs a policy

Creating a pull request is a write operation that adds new content to a repository. While reversible (PRs can be closed), it has high blast radius because an AI agent could create numerous unwanted PRs, submit incomplete or malicious code changes, or spam a repository. The operation modifies repository state and affects collaboration workflows, warranting a 'high' severity classification.

From the tool's definition The tool name is 'gh_pr_create' and description states 'Create a pull request'. This creates new data (a pull request) in a GitHub repository, modifying the repository state reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gh_pr_create Rate-limited

gh_pr_create 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": {
    "gh_pr_create": {
      "limits": [
        {
          "counter": "gh_pr_create_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 GitHub CLI MCP Server, so you can run agents against it safely.

FAQ

Questions about gh_pr_create

What does the gh_pr_create tool do? +

Create a pull request. It is categorised as a Write tool in the GitHub CLI 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 gh_pr_create? +

Register the GitHub CLI MCP Server MCP server in PolicyLayer and add a rule for gh_pr_create: 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 GitHub CLI MCP Server. Nothing to install.

What risk level is gh_pr_create? +

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

Can I rate-limit gh_pr_create? +

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

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

gh_pr_create is provided by the GitHub CLI MCP Server MCP server (munch-group/gh-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.