firepass_worker · Firepass MCP: Risk & Policy

WHAT IT DOES

What firepass_worker does on Firepass

AI agents invoke firepass_worker to trigger actions in Firepass. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why firepass_worker needs a policy

The server description explicitly mentions shell commands and file operations as capabilities. As a 'worker' agent tool in this agentic coding assistant, it likely executes tasks including shell commands. However, the tool description is empty, so confidence is lowered.

From the tool's definition Tool name 'firepass_worker' on a server described as providing 'tools for file operations, shell commands, and code search'; sibling tools suggest an agentic coding assistant context.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

firepass_worker Rate-limited

firepass_worker stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "firepass_worker": {
      "limits": [
        {
          "counter": "firepass_worker_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about firepass_worker

What does the firepass_worker tool do? +

firepass_worker. It is categorised as a Execute tool in the Firepass MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on firepass_worker? +

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

What risk level is firepass_worker? +

firepass_worker is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit firepass_worker? +

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

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

firepass_worker is provided by the Firepass MCP server (jameshgrn/firepass-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.