AI agents call delete_contact to permanently remove resources in Telegram MCP Complete — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes contact information without reversal capability. While the data impact is scoped to individual contact records rather than bulk operations, deletion is irreversible and constitutes destructive action.
From the tool's definition Tool name 'delete_contact' combined with description '删除联系人' (Chinese: 'delete contact') indicates irreversible removal of contact data.
Documented attack patterns abuse exactly the kind of access delete_contact gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Telegram MCP Complete, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_contact:
{
"version": "1",
"default": "deny",
"hide": [
"delete_contact"
]
}delete_contact disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
删除联系人. It is categorised as a Destructive tool in the Telegram MCP Complete MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Telegram MCP Complete MCP server in PolicyLayer and add a rule for delete_contact: 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 Complete. Nothing to install.
delete_contact is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_contact 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.
Set action: deny in the PolicyLayer policy for delete_contact. 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.
delete_contact is provided by the Telegram MCP Complete MCP server (you922/telegram-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Telegram MCP Complete, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
153 Telegram MCP Complete tools catalogued and risk-classified — across an index of 43,000+ MCP servers.