set_chat_description · Telegram Mcp Kit MCP: Risk & Policy

WHAT IT DOES

What set_chat_description does on Telegram Mcp Kit

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

WHY IT NEEDS A POLICY

Why set_chat_description needs a policy

This tool modifies chat properties reversibly (the description can be changed again or reverted), making it Write rather than Destructive. The blast radius is medium because an AI misusing this could alter how a chat appears to members, potentially causing confusion or reputational harm, but the change is not irreversible and does not delete data or execute arbitrary code.

From the tool's definition Tool description states it 'Change[s] the description of a chat (group/channel)' — a modification operation that creates or updates metadata about a chat resource.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_chat_description Rate-limited

set_chat_description 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": {
    "set_chat_description": {
      "limits": [
        {
          "counter": "set_chat_description_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 Kit, so you can run agents against it safely.

FAQ

Questions about set_chat_description

What does the set_chat_description tool do? +

Change the description of a chat (group/channel). It is categorised as a Write tool in the Telegram Mcp Kit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_chat_description? +

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

What risk level is set_chat_description? +

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

Can I rate-limit set_chat_description? +

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

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

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