clevertap_subscribe · Clevertap MCP: Risk & Policy

WHAT IT DOES

What clevertap_subscribe does on Clevertap

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

WHY IT NEEDS A POLICY

Why clevertap_subscribe needs a policy

This tool modifies user subscription preferences (opt-in/opt-out) for communication channels. It's a Write operation as it updates user profile data reversibly — subscriptions can be toggled.

From the tool's definition Subscribe or unsubscribe users from a specific channel (phone, email, or WhatsApp). Max 1000 records per request.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

clevertap_subscribe Rate-limited

clevertap_subscribe 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": {
    "clevertap_subscribe": {
      "limits": [
        {
          "counter": "clevertap_subscribe_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 Clevertap, so you can run agents against it safely.

FAQ

Questions about clevertap_subscribe

What does the clevertap_subscribe tool do? +

Subscribe or unsubscribe users from a specific channel (phone, email, or WhatsApp). Max 1000 records per request. It is categorised as a Write tool in the Clevertap MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on clevertap_subscribe? +

Register the Clevertap MCP server in PolicyLayer and add a rule for clevertap_subscribe: 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 Clevertap. Nothing to install.

What risk level is clevertap_subscribe? +

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

Can I rate-limit clevertap_subscribe? +

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

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

clevertap_subscribe is provided by the Clevertap MCP server (ralphcorleone/clevertap-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.