submit_fixed_code · MCP Pyrefly MCP: Risk & Policy

WHAT IT DOES

What submit_fixed_code does on MCP Pyrefly

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

WHY IT NEEDS A POLICY

Why submit_fixed_code needs a policy

This is a Write operation because it modifies code reversibly—accepting submissions of corrected code that can be undone or overwritten. It does not delete data (Destructive), execute arbitrary operations (Execute), or move money (Financial).

From the tool's definition 'Submit fixed code' modifies code in a repository or system by accepting and storing corrected versions. The gamification context ('earn lollipops') indicates persistent state changes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

submit_fixed_code Rate-limited

submit_fixed_code 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": {
    "submit_fixed_code": {
      "limits": [
        {
          "counter": "submit_fixed_code_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 MCP Pyrefly, so you can run agents against it safely.

FAQ

Questions about submit_fixed_code

What does the submit_fixed_code tool do? +

Submit fixed code to earn lollipops! 🍭. It is categorised as a Write tool in the MCP Pyrefly MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on submit_fixed_code? +

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

What risk level is submit_fixed_code? +

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

Can I rate-limit submit_fixed_code? +

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

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

submit_fixed_code is provided by the MCP Pyrefly MCP server (kimasplund/mcp-pyrefly). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.