On the MCP Server page, in the My Tokens list, each token has a Revoke button. Once revoked, the token stops working immediately, and any app using it loses access to Ads Editor. Use this if you think a token leaked, you stopped using an app or you want to rotate credentials. Because the token is only shown once, at creation, you can't recover it: if you need access again, generate a New Token and update your AI client's configuration.