logout_buyer

Sign out the current buyer from this MCP OAuth application. Call when the user asks to log out. Revokes the current Platform OAuth authorization and its access/refresh tokens, including other connections sharing that authorization. Does not sign out other applications or clear browser cookies. After success, stop using saved buyer, organization, cart, and checkout identifiers. Do not call link_buyer_identity until the user explicitly asks to sign in again. Never ask for passwords or tokens in chat.