unlike_message · Groupme MCP: Risk & Policy

WHAT IT DOES

What unlike_message does on Groupme

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

WHY IT NEEDS A POLICY

Why unlike_message needs a policy

Unliking a message is a reversible modification of social interaction state (removing a like). It writes/modifies data on the platform but is fully reversible (the message can be liked again), making it Write rather than Destructive. Blast radius is low as it only affects a like/reaction on a single message.

From the tool's definition Unlike a previously liked message

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unlike_message Rate-limited

unlike_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": {
    "unlike_message": {
      "limits": [
        {
          "counter": "unlike_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 Groupme, so you can run agents against it safely.

FAQ

Questions about unlike_message

What does the unlike_message tool do? +

Unlike a previously liked message. It is categorised as a Write tool in the Groupme MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on unlike_message? +

Register the Groupme MCP server in PolicyLayer and add a rule for unlike_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 Groupme. Nothing to install.

What risk level is unlike_message? +

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

Can I rate-limit unlike_message? +

Yes. Add a rate_limit block to the unlike_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 unlike_message completely? +

Set action: deny in the PolicyLayer policy for unlike_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 unlike_message? +

unlike_message is provided by the Groupme MCP server (kalebjs/groupme-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.