edit_chat_title · Tg MCP: Risk & Policy

WHAT IT DOES

What edit_chat_title does on Tgmcp

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

WHY IT NEEDS A POLICY

Why edit_chat_title needs a policy

This tool modifies existing data (chat title) but does not delete or destroy information. The change is reversible and has a limited blast radius compared to destructive operations. It qualifies as Write rather than Execute because it performs a specific, bounded data modification rather than executing arbitrary code or commands.

From the tool's definition Tool name 'edit_chat_title' and description 'Edit the title of a chat, group, or channel' indicate modification of chat metadata. The action is reversible—titles can be changed back to previous values.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

edit_chat_title Rate-limited

edit_chat_title 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": {
    "edit_chat_title": {
      "limits": [
        {
          "counter": "edit_chat_title_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Tgmcp, so you can run agents against it safely.

FAQ

Questions about edit_chat_title

What does the edit_chat_title tool do? +

Edit the title of a chat, group, or channel. It is categorised as a Write tool in the Tgmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on edit_chat_title? +

Register the Tg MCP server in PolicyLayer and add a rule for edit_chat_title: 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 Tgmcp. Nothing to install.

What risk level is edit_chat_title? +

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

Can I rate-limit edit_chat_title? +

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

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

edit_chat_title is provided by the Tg MCP server (oevortex/tgmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.