close_poll · WhatsApp MCP Automation MCP: Risk & Policy

WHAT IT DOES

What close_poll does on WhatsApp MCP Automation

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

WHY IT NEEDS A POLICY

Why close_poll needs a policy

Closing a poll modifies the poll object's state but does not delete data or trigger irreversible actions. It is reversible (a poll can be reopened in most systems). This qualifies as Write rather than Execute because it modifies a specific data object rather than running arbitrary code.

From the tool's definition Tool name 'close_poll' and description 'Close a poll so no more votes can be cast' indicate modification of poll state. This changes the poll's status from open to closed, preventing further voting—a reversible data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

close_poll Rate-limited

close_poll 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": {
    "close_poll": {
      "limits": [
        {
          "counter": "close_poll_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 WhatsApp MCP Automation, so you can run agents against it safely.

FAQ

Questions about close_poll

What does the close_poll tool do? +

Close a poll so no more votes can be cast. It is categorised as a Write tool in the WhatsApp MCP Automation MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on close_poll? +

Register the WhatsApp MCP Automation MCP server in PolicyLayer and add a rule for close_poll: 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 WhatsApp MCP Automation. Nothing to install.

What risk level is close_poll? +

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

Can I rate-limit close_poll? +

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

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

close_poll is provided by the WhatsApp MCP Automation MCP server (priyasogani8-star/whatsapp-mcp-automation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.