# Reference

Use this section when you need exact API details, limits, or implementation-facing reference material rather than a step-by-step guide.

## API and integrations

- [HTTP API overview](./api/) covers API paths, response formats, authentication, and the OpenAPI definition.
- [Content definition reference](./content-definitions/) lists the Widget, App, and Data Source definitions generated from Tilecast's source files.
- [Integration tokens](../integrations/tokens/) explains token permissions and lifecycle.
- [Manual Table integration](../integrations/manual-table/) and [fleet health](../integrations/fleet-health/) document supported integration requests.

## Product operations

- [Screen status](../operations/screen-status/) explains Fleet connection labels.
- [Activity reports](../operations/activity/) explains playback history, incidents, and health information.
- [Install built-in plugins](../operations/plugins/) lists the current optional plugins and their requirements.
- [Administration](../administration/) links to account, backup, security, networking, and Player-policy guides.

## Repository reference

These documents live with the source because they are mainly useful to maintainers and integrators:

- [Player protocol](https://github.com/gbyo/tilecast/blob/main/docs/player-protocol.md) and [device credential security](https://github.com/gbyo/tilecast/blob/main/docs/device-credential-security.md)
- [LAN discovery](https://github.com/gbyo/tilecast/blob/main/docs/mdns-discovery.md)
- [Activity metric definitions](https://github.com/gbyo/tilecast/blob/main/docs/activity.md) and [event contract](https://github.com/gbyo/tilecast/blob/main/docs/activity-event-contract.md)
- [Settings registry and Player policy contract](https://github.com/gbyo/tilecast/blob/main/docs/settings.md)
- [OpenAPI YAML](https://github.com/gbyo/tilecast/blob/main/docs/openapi.yaml)