A third-party backend uses an access token to create a one-time editor code for an end user.

The server finds or creates the end user by (applicationId, userId). userId is the caller's end-user ID, not the internal ss_user.id. Optional non-blank name, email, and phone values update the stored end-user profile; omitted, null, or empty values preserve existing profile values.

The optional extra.variables field injects End-User-level custom variables (up to 100 items) into the editor. Omitting extra or passing an empty array clears any previously saved variables for that user.

This endpoint only returns the minimal data needed for editor login redirection. The third-party redirects the browser to the ss editor frontend with this code; the frontend consumes the code internally and completes end-user login. This endpoint does not return applicationId, endUserId, created, or an internal user object.