Routing Middleware

Gives Claude the context to work with Vercel's platform-level routing middleware, the layer that runs before cache on every request. Covers the critical disambiguation between Vercel's routing middleware, Next.js 16's proxy.ts rename, and edge functions. Includes matcher patterns for scoping routes, geolocation helpers, rewrite/redirect patterns, and Bun runtime configuration. The validation rules catch Next.js 16 migrations and chain to auth skills when it detects middleware doing manual JWT verification. Useful when you're building A/B tests, geo-routing, or request interception that needs to work across any framework deployed to Vercel.

Install to Claude Code

npx -y skills add vercel-labs/vercel-plugin --skill routing-middleware --agent claude-code