Skills
Cut skill token cost ~63% with strict progressive disclosure (load name+description first, body on trigger)
Matt Pocock shipped mattpocock/skills v1.0 in June 2026 — the first semver-major since it became the most-starred Agent Skills collection on GitHub — reporting 63% lower token cost via disciplined progressive disclosure: the agent reads only a skill's name and description up front, pulls the SKILL.md body only when relevant, and loads scripts/references/assets only if the task needs them. Agent Skills is now an open standard adopted across ~40 clients (Copilot, Cursor, Codex, Gemini CLI, and more), so the pattern is portable beyond Claude. The actionable bit: keep frontmatter descriptions sharp and push everything else behind the disclosure boundary.
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