aprovar_gate · Maestro MCP: Risk & Policy

WHAT IT DOES

What aprovar_gate does on Maestro

AI agents invoke aprovar_gate to trigger actions in Maestro. 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 aprovar_gate needs a policy

This tool approves or rejects advancement with pending items in a development pipeline. While it is primarily a decision/control-flow action rather than a direct data write or deletion, it executes a consequential gate-passing operation that unlocks further pipeline stages.

From the tool's definition 'Aprova ou rejeita avanço com pendências' — triggers a gate approval/rejection decision that controls pipeline progression; 'IA NÃO deve chamar automaticamente' indicates the action has significant downstream consequences

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

aprovar_gate Rate-limited

aprovar_gate 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": {
    "aprovar_gate": {
      "limits": [
        {
          "counter": "aprovar_gate_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 Maestro, so you can run agents against it safely.

FAQ

Questions about aprovar_gate

What does the aprovar_gate tool do? +

EXCLUSIVO DO USUÁRIO. Aprova ou rejeita avanço com pendências. IA NÃO deve chamar automaticamente. It is categorised as a Execute tool in the Maestro MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on aprovar_gate? +

Register the Maestro MCP server in PolicyLayer and add a rule for aprovar_gate: 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 aprovar_gate? +

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

Can I rate-limit aprovar_gate? +

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

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

aprovar_gate 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.