import_contacts · Tg MCP: Risk & Policy

WHAT IT DOES

What import_contacts does on Tgmcp

AI agents use import_contacts 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 import_contacts needs a policy

The tool creates new contact records in the user's Telegram account. While reversible (fitting Write rather than Destructive), it modifies user data and could be misused to pollute contact lists or add unwanted entries.

From the tool's definition Tool description states 'Import a list of contacts' — a create/add operation that modifies the contact list by adding new entries. This is a reversible write operation (contacts can be deleted via delete_contact).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

import_contacts Rate-limited

import_contacts 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": {
    "import_contacts": {
      "limits": [
        {
          "counter": "import_contacts_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 Tgmcp, so you can run agents against it safely.

FAQ

Questions about import_contacts

What does the import_contacts tool do? +

Import a list of contacts. Each contact should be a dict with phone, first_name, last_name. 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 import_contacts? +

Register the Tg MCP server in PolicyLayer and add a rule for import_contacts: 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 import_contacts? +

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

Can I rate-limit import_contacts? +

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

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

import_contacts 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.