Delete the photo of a chat, group, or channel.
AI agents call delete_chat_photo to permanently remove resources in Tgmcp — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool permanently removes a chat photo, which cannot be recovered. While not as severe as deleting the entire chat or messages, it is irreversible data destruction. Severity is medium rather than high because the blast radius is limited to a single photo asset rather than core communication data, though an AI agent could use this to deface group/channel settings.
From the tool's definition Tool name contains 'delete'; description states 'Delete the photo of a chat, group, or channel.' This is an irreversible removal of data.
Attacks that exploit this kind of access
Delete the photo of a chat, group, or channel. It is categorised as a Destructive tool in the Tgmcp MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Tg MCP server in PolicyLayer and add a rule for delete_chat_photo: 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.
delete_chat_photo 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_chat_photo 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_chat_photo. 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_chat_photo 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.
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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