kinbox_send_message · Kinbox MCP: Risk & Policy

WHAT IT DOES

What kinbox_send_message does on Kinbox

AI agents invoke kinbox_send_message to trigger actions in Kinbox. 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 kinbox_send_message needs a policy

This tool sends WhatsApp messages to external recipients via an integration endpoint. Sending messages to real users is an external operation with real-world side effects — it cannot be trivially undone, could be misused to spam or phish contacts at scale, and triggers outbound communication.

From the tool's definition Envia mensagem WhatsApp via Kinbox (usa endpoint de integração)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

kinbox_send_message Rate-limited

kinbox_send_message 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": {
    "kinbox_send_message": {
      "limits": [
        {
          "counter": "kinbox_send_message_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 Kinbox, so you can run agents against it safely.

FAQ

Questions about kinbox_send_message

What does the kinbox_send_message tool do? +

Envia mensagem WhatsApp via Kinbox (usa endpoint de integração). It is categorised as a Execute tool in the Kinbox MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on kinbox_send_message? +

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

What risk level is kinbox_send_message? +

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

Can I rate-limit kinbox_send_message? +

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

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

kinbox_send_message is provided by the Kinbox MCP server (vergamini65-boop/kinbox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.