send_whatsapp · Mcp Bot Crawler MCP: Risk & Policy

WHAT IT DOES

What send_whatsapp does on Mcp Bot Crawler

AI agents use send_whatsapp to create or update resources in Mcp Bot Crawler — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Bot Crawler environment.

WHY IT NEEDS A POLICY

Why send_whatsapp needs a policy

This tool creates new messages within the WhatsApp/CRM system. While it modifies external state (customer communications), the operation is reversible (messages can be deleted/recalled in most systems) and does not destroy data or commit financial transactions. The 24-hour window and opt-out enforcement indicate safety guardrails.

From the tool's definition Tool description states it 'Send[s] a WhatsApp message' and 'Requires a read+write API key', indicating it creates/modifies data (messages) via an external API. The ability to send communications to CRM contacts is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_whatsapp Rate-limited

send_whatsapp stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "send_whatsapp": {
      "limits": [
        {
          "counter": "send_whatsapp_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about send_whatsapp

What does the send_whatsapp tool do? +

Send a WhatsApp message to a CRM contact via the native WhatsApp Business API. Supports {first_name}, {last_name}, {deal_name} merge tags, or a pre-approved template_id. Enforces the 24-hour window and contact opt-out. Requires a read+write API key. It is categorised as a Write tool in the Mcp Bot Crawler MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on send_whatsapp? +

Register the Mcp Bot Crawler MCP server in PolicyLayer and add a rule for send_whatsapp: 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 Mcp Bot Crawler. Nothing to install.

What risk level is send_whatsapp? +

send_whatsapp is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit send_whatsapp? +

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

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

send_whatsapp is provided by the Mcp Bot Crawler MCP server (merulocal/hellogrowthcrmwebsite_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.