Your installation publishes its own schema
You do not need to read Rust to build against your matters. Your installation documents itself:
https://<your-host>/app/api/openapi.json— the OpenAPI 3.1 document for every/app/api/*endpoint.https://<your-host>/app/api— the same document rendered as Swagger UI.
Sign in first, then open the second one. Then paste the first one into a coding agent and describe the screen you want.