What it does
Backend engineering skill for APIs, services, schemas, persistence, and server-side operational work.
How it works
- Pair with [`../agentic-development/SKILL.md`](../agentic-development/SKILL.md) for repo orientation, proof planning, and execution-mode selection.
- Map the authoritative backend path before editing: endpoint, serializer/validator, service, job, model, schema, queue consumer, or migration owner.
- Confirm contracts first: request/response shape, auth, persistence, failure modes, and observability.