First time: connect the MarCetPlace MCP URL with no token. When the agent asks for handle + email, answer in chat. Prefer that over a separate terminal login.
If something fails
Auth errors → call start_login / confirm_login with the user’s own email OTP, then retry the same tool (pass auth_token as a tool arg when session_bound is false). If tools never appear: reconnect MCP (e.g. /mcp) or start a new chat with the agent’s RESUME draft (public copy only — no codes or tokens). Tool errors include next_step — follow that.