What problem does it solve? AI models rely on training memory that may be outdated for version-sensitive APIs, leading to deprecated or incorrect implementations. This Skill forces verification of framework, library, SDK, and platform behavior against official sources before writing code. ## Core Features & Use Cases - Local Version Detection: Finds the exact dependency version from manifests, lockfiles, imports, and CI images before checking behavior. - Official Source Verification: Checks official docs, release notes, migration guides, and standards specs rather than blog posts or model memory. - Conflict Surfacing: Flags mismatches between official guidance and existing local conventions, then applies the smallest source-compatible implementation. - Use Case: When upgrading a React or AWS SDK dependency, use this Skill to confirm the current API signatures and deprecation notices from official release notes instead of trusting memorized patterns. ## Quick Start Use official-source-check to verify whether this framework API is still supported in our installed version before implementing the feature.