Next.js ships with API routes, which provide an easy solution to build your own API. This example shows how to implement simple middleware to wrap around your API endpoints.

Execute create-next-app with npm, Yarn, or pnpm to bootstrap the example:

npx create-next-app --example api-routes-middleware api-routes-middleware-app

yarn create next-app --example api-routes-middleware api-routes-middleware-app

pnpm create next-app --example api-routes-middleware api-routes-middleware-app

Deploy it to the cloud with Vercel (Documentation).