Google Agent Skills: How a Single SKILL.md File Boosted AI Coding Accuracy from 6.8% to 96%

Google introduced 'Agent Skills,' standalone instruction packages (centered on a SKILL.md file) that inject up-to-date API knowledge into an AI agent's context window, closing the gap between stale training data and evolving SDKs. Benchmarks show Gemini 3.0 Pro's coding accuracy jumped from 6.8% to 96% with a single skill file loaded. Google's Agent Development Kit (ADK) provides a simple API to load and integrate these skills into coding agents.