Authentication & signup
Public reconstructions need no account (see tier limits). For an API key, use the signup page at https://api.apertureapi.com/signup, or call the API directly:
curl -sS -X POST https://api.apertureapi.com/users/signup \
-H 'Content-Type: application/json' \
-d '{"email": "you@example.com", "password": "..."}'
The response returns a bearer token and your API key (ak_…) plus your account
tier. Send the API key as a bearer credential on authenticated requests.