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Addy Osmani's "Agent Skills" Hits 26K Stars: Markdown Workflows for AI Coding Agents

Google software engineer Addy Osmani open-sources Agent Skills, now at 26K GitHub stars. Core observation: "the default behaviour of any AI coding agent is to take the shortest path to 'done'" — they skip specs, tests, code review, scope discipline. Agent Skills encodes senior-engineer practices as markdown workflows with checkpoints and exit criteria, making them un-rationalize-able. Works with Claude Code (native plugin marketplace), Cursor (.cursor/rules), Gemini CLI, Aider, Windsurf. The next bottleneck for agentic coding isn't model capability — it's process discipline.