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mcollina/skills

★ 1,848 · TypeScript · MIT · updated Apr 2026

My own collection of skills for modern Node.js development

Matteo Collina's personal collection of AI coding agent skills — structured Markdown rule files that teach AI assistants how he wants Node.js, Fastify, TypeScript, and related tooling handled. Collina is a Node.js TSC member and Fastify creator, so the Fastify and nodejs-core skills carry real authority. This is for developers who work heavily in the Node/Fastify ecosystem and want their AI tools to behave like someone who has actually shipped production Node.js at scale.

The Fastify skill is the main draw — 19 rule files covering routes, plugins, schemas, serialization, testing, and more, written by the person who built the framework. The nodejs-core skill goes deep into libuv internals, V8 GC, NAPI, and native addon development; it's not surface-level. The skill-optimizer meta-skill (benchmarking prompts across models, regression triage) is a genuinely novel addition that few prompt repos bother with. The directory structure is clean and tooling-agnostic — plain Markdown files that any agent runner can consume.

It's one person's workflow, not a community standard — the node and TypeScript skills are solid but not qualitatively better than what you'd get from a well-configured ESLint + tsconfig baseline. No versioning strategy for individual skills, so if a rule changes you can't pin to a prior known-good state. The snipgrapher skill ties you to a specific paid/niche tool that most developers have never heard of, adding noise to the package. Stars are inflated by Collina's profile; the actual utility for someone outside the Fastify/Node core orbit is narrower than the number implies.

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