create_fix_pr · Security-Use MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_fix_pr does on Security-Use MCP Server

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

WHY IT NEEDS A POLICY

Why create_fix_pr needs a policy

This tool creates (writes) data—specifically, a GitHub Pull Request—which is a reversible action. While PRs can be closed, they represent a persistent artifact and a modification to repository state. It does not delete data irreversibly (Destructive), move money (Financial), execute arbitrary code on the host system (Execute), nor merely retrieve data (Read).

From the tool's definition Tool name 'create_fix_pr' and description 'Create a GitHub Pull Request with security fixes' indicate the tool creates a new pull request artifact in GitHub, which is a reversible write operation that modifies repository state by adding a new PR.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_fix_pr Rate-limited

create_fix_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_fix_pr": {
      "limits": [
        {
          "counter": "create_fix_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 Security-Use MCP Server, so you can run agents against it safely.

FAQ

Questions about create_fix_pr

What does the create_fix_pr tool do? +

Create a GitHub Pull Request with security fixes. It is categorised as a Write tool in the Security-Use 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 create_fix_pr? +

Register the Security-Use MCP Server MCP server in PolicyLayer and add a rule for create_fix_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 Security-Use MCP Server. Nothing to install.

What risk level is create_fix_pr? +

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

Can I rate-limit create_fix_pr? +

Yes. Add a rate_limit block to the create_fix_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_fix_pr completely? +

Set action: deny in the PolicyLayer policy for create_fix_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_fix_pr? +

create_fix_pr is provided by the Security-Use MCP Server MCP server (security-use/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.