Where is the documentation and sign-in for the existing Casafari API?

The existing Casafari API is documented in this hub under Existing API customers and REST API, with a public OpenAPI description.

The public OpenAPI description is at https://docs.api.casafari.com/openapi.json.

• API v1 reference and API v2 reference.
• Your account's own operations: sign in at https://docs.api.casafari.com/ to see the operations your account may call.

Sign-in works two ways:

• Email and password: POST https://api.casafari.com/login returns an access and a refresh token (JWT); GET /refresh-token renews the access token.
• API client, for an integration with no person in the loop: the account owner creates it in Settings → API Clients on https://docs.api.casafari.com/ and hands over its client_id and client_secret, which you exchange at https://api.casafari.com/oauth/token.

Details: REST authentication.