Advanced

Extend Crux, work at framework boundaries, and understand advanced type and runtime behavior.

These guides cover extension points and lower-level integration concerns. You do not need them for ordinary prompt, tool, or media work.

How Crux preserves types through prompts, contexts, tools, agents, and flows.

Implement a provider adapter while preserving Core execution contracts.

Prepare provider requests and finish them outside the managed adapter runtime.

Contribute definitions, facts, rules, and relations through compiler-owned manifests.

Classify and handle Crux runtime and provider errors.

Move between public API generations and remove obsolete compatibility code.