send_telegram_message · Simple MCP: Risk & Policy

WHAT IT DOES

What send_telegram_message does on Simple MCP

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

WHY IT NEEDS A POLICY

Why send_telegram_message needs a policy

This tool creates/sends data (a message) to Telegram, which is reversible (messages can be deleted). It does not move money, execute arbitrary code, or irreversibly delete data. However, it can spam or leak information if misused, hence medium severity. The empty description lowers confidence slightly, but the function name is unambiguous.

From the tool's definition Tool name is 'send_telegram_message' which sends a message to Telegram. The description is empty, but the name clearly indicates a write operation that creates a message in an external service.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_telegram_message Rate-limited

send_telegram_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": {
    "send_telegram_message": {
      "limits": [
        {
          "counter": "send_telegram_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 Simple MCP, so you can run agents against it safely.

FAQ

Questions about send_telegram_message

What does the send_telegram_message tool do? +

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

How do I enforce a policy on send_telegram_message? +

Register the Simple MCP server in PolicyLayer and add a rule for send_telegram_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 Simple MCP. Nothing to install.

What risk level is send_telegram_message? +

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

Can I rate-limit send_telegram_message? +

Yes. Add a rate_limit block to the send_telegram_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 send_telegram_message completely? +

Set action: deny in the PolicyLayer policy for send_telegram_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 send_telegram_message? +

send_telegram_message is provided by the Simple MCP server (karar-hayder/simple-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.