# Hyperscale agent surfaces

Start with the agent skill, then open the reference for the task at hand.

- [Hyperscale agent skill](/agents/SKILL.md): the entry point for composing or operating a frozen Hyperscale Product through HSX, UDL, the hyperscale CLI, hosted MCP, or a generated SDK.
- [HSX platform reference](/agents/references/hsx.md): composer inputs, Blueprint programs, catalog admission, tenant overlays, compilation, and Product evolution rules.
- [HSX language skill](/agents/skills/hsx/SKILL.md): the public language instructions, money flow selection rules, diagnostics loop, money rules, and compiling examples.
- [UDL admission reference](/agents/references/udl.md): the admitted Product definition, checked instructions, gates, public actions, and append-only evolution rules.
- [Product operation reference](/agents/references/operate.md): credentials, Product creation, frozen-action discovery, CLI, MCP, and generated SDK operation.