brainstorm · Maestro MCP: Risk & Policy

WHAT IT DOES

What brainstorm does on Maestro

AI agents call brainstorm as a supporting operation in Maestro workflows.

WHY IT NEEDS A POLICY

Why brainstorm needs a policy

The description provides no meaningful information about what this tool does. The name 'brainstorm' suggests ideation or planning, which would typically be a Read/Other category with no side effects, but without a clear description we cannot determine actual behavior. Given the extremely uninformative description, confidence is very low and we default to Other with low severity.

From the tool's definition Tool description is '[Interno] Use' — uninformative and effectively empty.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

brainstorm Rate-limited

brainstorm gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "brainstorm": {
      "limits": [
        {
          "counter": "brainstorm_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about brainstorm

What does the brainstorm tool do? +

[Interno] Use. It is categorised as a Other tool in the Maestro MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on brainstorm? +

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

What risk level is brainstorm? +

brainstorm is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit brainstorm? +

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

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

brainstorm is provided by the Maestro MCP server (matheus-gama-deluna/maestro). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.