indicate_typing · PyWA MCP Server MCP: Risk & Policy

WHAT IT DOES

What indicate_typing does on PyWA MCP Server

AI agents invoke indicate_typing to trigger actions in PyWA MCP Server. 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 indicate_typing needs a policy

Based on the tool name and server context (WhatsApp Business API), 'indicate_typing' likely triggers a typing indicator in a WhatsApp conversation — an external operation with a visible side effect. This is an Execute-level action as it triggers an external operation, though the blast radius is relatively low since it only shows a transient typing status. Confidence is reduced due to the empty description.

From the tool's definition Tool name 'indicate_typing' on a WhatsApp Business API server; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

indicate_typing Rate-limited

indicate_typing 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": {
    "indicate_typing": {
      "limits": [
        {
          "counter": "indicate_typing_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 PyWA MCP Server, so you can run agents against it safely.

FAQ

Questions about indicate_typing

What does the indicate_typing tool do? +

indicate_typing. It is categorised as a Execute tool in the PyWA MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on indicate_typing? +

Register the PyWA MCP Server MCP server in PolicyLayer and add a rule for indicate_typing: 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 indicate_typing? +

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

Can I rate-limit indicate_typing? +

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

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

indicate_typing 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.