What problem does it solve? Training data goes stale, APIs get deprecated, and best practices evolve, so code written from memory often contains outdated or incorrect framework patterns. This Skill grounds every implementation decision in official documentation so the code you receive is verifiable against authoritative sources. ## Core Features & Use Cases - Stack Detection: Reads dependency files like package.json, requirements.txt, or go.mod to identify exact framework versions before writing any code. - Documentation-Grounded Implementation: Fetches the relevant official docs page, follows documented API signatures, avoids deprecated patterns, and surfaces conflicts between docs and existing code. - Source Citation: Annotates framework-specific decisions with full URLs and quoted passages, and explicitly flags anything that could not be verified. - Use Case: You are building a form in a React 19 project. Instead of guessing, the Skill detects React 19.1.0 from package.json, fetches the official useActionState reference, implements the documented pattern, and cites the exact docs URL in a code comment. ## Quick Start Ask the assistant to implement a framework-specific feature using source-driven development so every pattern is verified against the official docs and cited.