telegram_pin_message | PolicyLayer

WHAT IT DOES

What telegram_pin_message does on Telegram MCP Server & Channel Monitor

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

WHY IT NEEDS A POLICY

Why telegram_pin_message needs a policy

Pinning a message is a reversible modification action that changes chat metadata and user-visible state, but does not delete data or execute arbitrary code. It fits the Write category (creates or modifies data reversibly). Severity is medium because misuse could spam pin notifications, confuse chat members, or bury important messages, but the action is easily undone by unpinning.

From the tool's definition telegram_pin_message - 'pins a specific message in a chat' (description translates from Korean: '채팅에서 특정 메시지를 고정합니다' = pins a message in chat). Requires bot to have admin privileges. This modifies chat state by changing message visibility/prominence.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

telegram_pin_message Rate-limited

telegram_pin_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": {
    "telegram_pin_message": {
      "limits": [
        {
          "counter": "telegram_pin_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 Telegram MCP Server & Channel Monitor, so you can run agents against it safely.

FAQ

Questions about telegram_pin_message

What does the telegram_pin_message tool do? +

채팅에서 특정 메시지를 고정합니다. (봇이 관리자 권한 필요). It is categorised as a Write tool in the Telegram MCP Server & Channel Monitor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on telegram_pin_message? +

Register the Telegram MCP Server & Channel Monitor MCP server in PolicyLayer and add a rule for telegram_pin_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 Telegram MCP Server & Channel Monitor. Nothing to install.

What risk level is telegram_pin_message? +

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

Can I rate-limit telegram_pin_message? +

Yes. Add a rate_limit block to the telegram_pin_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 telegram_pin_message completely? +

Set action: deny in the PolicyLayer policy for telegram_pin_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 telegram_pin_message? +

telegram_pin_message is provided by the Telegram MCP Server & Channel Monitor MCP server (ruchiayeon/telegram-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.