unmute_chat · Telegram MCP: Risk & Policy

WHAT IT DOES

What unmute_chat does on Telegram

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

WHY IT NEEDS A POLICY

Why unmute_chat needs a policy

Unmuting a chat changes user notification preferences but does not create, delete, or retrieve data. It is a reversible modification of chat metadata (notification state), placing it squarely in the Write category. The blast radius is minimal: unintended unmuting causes noise rather than data loss or financial harm. Severity is low because the user can easily re-mute the chat.

From the tool's definition Tool description states 'Unmute notifications for a chat' — this modifies chat notification settings, a reversible state change.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

unmute_chat Rate-limited

unmute_chat 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": {
    "unmute_chat": {
      "limits": [
        {
          "counter": "unmute_chat_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, so you can run agents against it safely.

FAQ

Questions about unmute_chat

What does the unmute_chat tool do? +

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

How do I enforce a policy on unmute_chat? +

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

What risk level is unmute_chat? +

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

Can I rate-limit unmute_chat? +

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

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

unmute_chat is provided by the Telegram MCP server (vovavindar/telegram-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.