# Reference

The reference describes what the operator publishes and the API
that drives it. [Adapters](/docs/reference/adapters/),
[Peripherals](/docs/reference/peripherals/), and
[PairingRequests](/docs/reference/pairingrequests/) are the pairing
API, one page per resource with every field.
[Devices](/docs/reference/devices/) describes the device classes,
the devices with their attributes and taints, and what a prepared
claim delivers to a container. [Metrics](/docs/reference/metrics/)
lists what the operator serves at `/metrics`.