# Public and private boundaries

## Public developer surface

- Stable application-facing types and methods
- UI components intended for applications
- Audio and graphics utility APIs
- Examples, templates, and documentation
- Plugin and extension contracts released by Agila

## Proprietary Agila implementation

The following are intentionally absent:

- Kernel and boot code
- Scheduling and memory-management logic
- Security and policy engines
- Private system-service implementations
- Service transport and private ABI details
- Hardware framebuffer and display-server internals
- AGX optimization, dispatch, caching, and policy implementations
- Flying V compiler internals
- Signing, entitlement, and package-verification systems

Applications should depend only on documented public contracts.