Development

Extend snap functionality with API access and customised environments for your applications and devices.

• Environment variables: Internal values accessible to snapped applications.

• Snapd REST API: Interactive OpenAPI documentation for the Snapd REST API.

• REST API error codes: The types of errors returned by the API.

YAML schemas

YAML schemas define exactly what a device, kernel and snap is capable of.

• snap.yaml: The metadata for a snap.

• Gadget snap: System and device properties.

• Kernel snap: The Linux kernel snap, its metadata and setup files.