Revoke the stored OAuth token and sign the user out of the YouTube MCP server. Calls Google
AI agents call revoke_oauth_token to permanently remove resources in Ytmcp — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call revoke_oauth_token doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Ytmcp is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Revoke the stored OAuth token and sign the user out of the YouTube MCP server. Calls Google. It is categorised as a Destructive tool in the Ytmcp MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Yt MCP server in PolicyLayer and add a rule for revoke_oauth_token: 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 Ytmcp. Nothing to install.
revoke_oauth_token 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 revoke_oauth_token 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 revoke_oauth_token. 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.
revoke_oauth_token is provided by the Yt MCP server (@mrsknetwork/ytmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.