Hard invariants (non-negotiable)
description
ANTHROPIC_API_KEY must never appear in any file (OAuth-only). Conventional Commits with an (O<N>) suffix on every commit. third_party/ is gitignored, never written or scanned. No defensive code at internal boundaries - validate at system edges only. No comments explaining what code does, WHY-only. No half-implementations. api_key_present must be false in every EngineeringFileResult output.
provenance
source_doc anthropic-skills:engineering-coworker (hard_invariants block) · created 2026-07-02 04:46:31 · JSON
See Skill vs. Implementation for how this differs across sources.