[yasserf]

Pikku is a TypeScript backend framework that lets you write your backend as plain functions, similar to Lambdas, but without any platform tie-in.

Each function can be wired to whatever transport you want:

  - HTTP / WebSockets / SSE

  - Queues (SQS, RabbitMQ, Postgres jobs, etc.)

  - CLI commands, schedulers, or AI MCP agents

Pikku builds a full type contract between your backend and frontend. It doesn’t ship a runtime SDK just typed native fetch calls / websockets / queue clients so your frontend gets zero added bundle size and fully inferred request/response types out of the box.

The framework is tree-shaken at the function level, so you can deploy only what’s needed (plus its dependencies) as a binary, Docker image, or serverless functions. Switch cloud providers or queue systems freely, no rewrites, just switch runtimes.

Auth, permissions, and middleware live directly at the function level, giving you a single consistent entrypoint across all transports.

It also supports Next.js-style "use server" patterns — you can call backend functions directly in SSR while keeping them accessible over HTTP for external use.

There’s even a CLI mode where you can run commands on a server and stream live output to a tiny local client — same code, same types.

I'm about to release the next version that allow supports workflows similar to those just released by Vercel or by Cloudflare Workflows.

Would love to hear your thoughts! There's even more on the roadmap :D