send_document · PyWA MCP Server MCP: Risk & Policy

WHAT IT DOES

What send_document does on PyWA MCP Server

AI agents use send_document to create or update resources in PyWA MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PyWA MCP Server environment.

WHY IT NEEDS A POLICY

Why send_document needs a policy

This tool creates and transmits data (a document) through WhatsApp, which is a reversible write operation. While the description is empty, the naming convention matches sibling tools like send_image and send_audio that clearly perform write operations.

From the tool's definition Tool name 'send_document' combined with sibling tools that send various media types (send_audio, send_image, send_location, send_contact) and messages through WhatsApp Business API. The PyWA library context indicates these are message-sending operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_document Rate-limited

send_document 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_document": {
      "limits": [
        {
          "counter": "send_document_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 PyWA MCP Server, so you can run agents against it safely.

FAQ

Questions about send_document

What does the send_document tool do? +

send_document. It is categorised as a Write tool in the PyWA MCP Server 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_document? +

Register the PyWA MCP Server MCP server in PolicyLayer and add a rule for send_document: 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 PyWA MCP Server. Nothing to install.

What risk level is send_document? +

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

Can I rate-limit send_document? +

Yes. Add a rate_limit block to the send_document 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_document completely? +

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

send_document is provided by the PyWA MCP Server MCP server (jem-hr/pywa-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

send_document is one line of PyWA MCP Server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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