# Reference

- [Method](/ncalayerjs/reference/method.md): Alias for NCALayer API method
- [Payload](/ncalayerjs/reference/payload.md): Represent JSON payload of out coming request to NCALayer
- [Response](/ncalayerjs/reference/response.md): Represents JSON payload returned by NCALayer
- [Callback](/ncalayerjs/reference/callback.md): To be invoked on NCALayer response
- [Client](/ncalayerjs/reference/client.md): Used to send API requests to NCALayer