whatsapp_edit_message · Waha MCP: Risk & Policy

WHAT IT DOES

What whatsapp_edit_message does on Waha

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

WHY IT NEEDS A POLICY

Why whatsapp_edit_message needs a policy

Editing a message is a reversible modification operation. It changes existing data but does not destroy it, and the change can be undone by editing again. This falls squarely into the Write category.

From the tool's definition Tool name and description: 'Edit a previously sent text message.' The word 'Edit' indicates modification of existing data. The description clarifies it modifies messages that were already sent (fromMe=true).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

whatsapp_edit_message Rate-limited

whatsapp_edit_message 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": {
    "whatsapp_edit_message": {
      "limits": [
        {
          "counter": "whatsapp_edit_message_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 Waha, so you can run agents against it safely.

FAQ

Questions about whatsapp_edit_message

What does the whatsapp_edit_message tool do? +

Edit a previously sent text message. Only works on messages you sent (fromMe=true). WhatsApp shows an. It is categorised as a Write tool in the Waha MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on whatsapp_edit_message? +

Register the Waha MCP server in PolicyLayer and add a rule for whatsapp_edit_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 Waha. Nothing to install.

What risk level is whatsapp_edit_message? +

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

Can I rate-limit whatsapp_edit_message? +

Yes. Add a rate_limit block to the whatsapp_edit_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 whatsapp_edit_message completely? +

Set action: deny in the PolicyLayer policy for whatsapp_edit_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 whatsapp_edit_message? +

whatsapp_edit_message is provided by the Waha MCP server (@marcos-heidemann/waha-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.