crow_delegate · Crow MCP: Risk & Policy

WHAT IT DOES

What crow_delegate does on Crow

AI agents invoke crow_delegate to trigger actions in Crow. 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 crow_delegate needs a policy

This tool delegates tasks to an autonomous bot for asynchronous execution. The actual effects depend entirely on what task is handed off, which could range from benign reads to destructive operations. Since it executes arbitrary background tasks via an external agent, Execute is the most appropriate base category.

From the tool's definition "Hand off a LONG or BACKGROUND task to be done asynchronously by a Crow bot" — triggers external autonomous agent execution

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

crow_delegate Rate-limited

crow_delegate 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": {
    "crow_delegate": {
      "limits": [
        {
          "counter": "crow_delegate_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 Crow, so you can run agents against it safely.

FAQ

Questions about crow_delegate

What does the crow_delegate tool do? +

Hand off a LONG or BACKGROUND task to be done asynchronously by a Crow bot, returning. It is categorised as a Execute tool in the Crow MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on crow_delegate? +

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

What risk level is crow_delegate? +

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

Can I rate-limit crow_delegate? +

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

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

crow_delegate is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.