Revoke access_token and generate a new one.
AI agents call telegraph_revoke_access_token to permanently remove resources in Telegraph MCP Server (Python) — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Revoking an access token is irreversible — the old token is permanently invalidated and cannot be restored. Any integrations or sessions using the old token will immediately lose access. While a new token is generated, all existing uses of the old token are permanently broken, making this a destructive operation with high blast radius if misused by an AI agent.
From the tool's definition Revoke access_token and generate a new one
Attacks that exploit this kind of access
Revoke access_token and generate a new one. It is categorised as a Destructive tool in the Telegraph MCP Server (Python) MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Telegraph MCP Server (Python) MCP server in PolicyLayer and add a rule for telegraph_revoke_access_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 Telegraph MCP Server (Python). Nothing to install.
telegraph_revoke_access_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 telegraph_revoke_access_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 telegraph_revoke_access_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.
telegraph_revoke_access_token is provided by the Telegraph MCP Server (Python) MCP server (nehoraihadad/telegraph-mcp-py). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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