What is this page?
The sign-in gate for vetted beta users. Access is invite-only — there is no
public signup path. If you applied through the landing page and your account was
approved, you received a welcome email with a one-time link to set your password.
How to log in
- Email or username. Most beta users use their email; the operator may have a separate username.
- Password. Enter the password you set from the welcome email.
- Wrong details? The error message is intentionally generic — for security we don't say which field was wrong.
Forgot your password?
Use the Forgot password? link below the form. We email a reset link to
the address on file; the link is single-use and valid for 7 days.
Not approved yet?
The only way in is the application form on the
landing page. We read every application by
hand. Allow a few days; we may follow up for a 10-minute intro call before
creating your account.
What you get on first login
- A pre-loaded sample IFC project so you can try Ask and Modify in seconds.
- A daily token allowance for cloud LLM use (visible inside the app, resets at midnight UTC).
- Direct access to the operator if anything is broken or you want the cap raised.
Caveats — read these
- This is a private testing environment. Things will occasionally break.
- When cloud LLM providers are active, your prompts and the relevant context are sent to them. Don't upload anything you wouldn't share under their standard terms.
- Geometry modifications are out of scope — Castor handles properties, materials, classifications, psets only.
