> For complete lifecycle-event payload schemas and examples, use the canonical overview: Session /api/sessions; Room lifecycle, participants, and room playback /api/rooms; Session playback /api/playback; Recording /api/recording; DTMF /api/keypad-input; Messages /api/messages; WebSocket Session /api/web-socket. Use /api/event-delivery for transport behavior. Endpoint pages name relevant events, but these overviews are the canonical references. # Application configuration > Build reliable calling experiences with Vorbal APIs for calls, media, messaging, and webhooks. ## API Docs - Application configuration [Get application configuration](https://docs.vorbal.dev/api/application-configuration/get-application-configuration.md) - Application configuration [Update application configuration](https://docs.vorbal.dev/api/application-configuration/update-application-configuration.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://docs.vorbal.dev/openapi.json) - [OpenAPI YAML](https://docs.vorbal.dev/openapi.yaml)