If you're writing serverless functions on Netlify, this walks you through the modern default export pattern (not the old exports.handler), path routing, background jobs, scheduled tasks, and streaming responses. It's most useful when you're building standalone APIs or adding background processing to static sites. If you're using a framework like Next.js or SvelteKit, you probably won't need this since those generate their own functions through adapters. The coverage of the Context object and environment variable handling (Netlify.env, not process.env) is solid. Good reference for timeout limits and when to use the background function suffix pattern.
npx skills add https://github.com/netlify/context-and-tools --skill netlify-functions