delete_messages
AI agents call delete_messages to permanently remove resources in Telegram — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion of messages is an irreversible operation that destroys data and cannot be undone. This falls squarely into the Destructive category. Severity is high because an AI agent with unrestricted access could delete entire conversation histories or critical messages from a user's Telegram account, causing data loss.
From the tool's definition Tool name is 'delete_messages' which explicitly indicates irreversible deletion of message data. The server description confirms this tool exists alongside other message management capabilities.
Attacks that exploit this kind of access
delete_messages. It is categorised as a Destructive tool in the Telegram MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Telegram MCP server in PolicyLayer and add a rule for delete_messages: 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.
delete_messages 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_messages 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_messages. 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_messages 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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