Backcap — Production-ready backend features for TypeScript

Open source · TypeScript · AI-ready

Stop rewriting the same
backend features.

Auth, billing, blog and more — built right, works everywhere, owned by you.
Copy production-ready code your AI agent already understands.

Get Started GitHub

$ npx @backcap/cli init

Think shadcn/ui, but for your backend.

~/my-app

You've already built this before.

Every backend project rebuilds the same features — authentication, permissions, blog, notifications, billing. Sound familiar?

Traditional backend development

Rewrite auth from scratch — again

Build custom permissions — for the third time

Implement yet another blog system

Handle yet another file upload system

Set up notifications — once more

Handle billing logic — again

With Backcap

npx @backcap/cli add auth

npx @backcap/cli add rbac

npx @backcap/cli add blog

npx @backcap/cli add files

npx @backcap/cli add notifications

npx @backcap/cli add billing

Three steps. That's it.

Install the CLI

Initialize Backcap in your existing TypeScript project.

npx @backcap/cli init

Add what you need

Pick the backend features for your project.

npx @backcap/cli add auth

npx @backcap/cli add blog

npx @backcap/cli add billing

It's your code now

Full source code, directly in your project. Every feature follows the same clean structure.

your-project/

└── domains/

└── auth/

├── contracts/

├── domain/

└── application/

Edit anything Use AI skills No lock-in

Read the getting started guide

Pick what you need.

Production-ready backend features — full source code, zero dependency.

Auth

Sign-up, login, sessions & API keys

add auth

Billing

Payments, subscriptions & invoicing

add billing

Files

Upload, storage, processing & image variants

add files

RBAC

Roles, permissions & access control

add rbac

Notifications

In-app, email & push notifications

add notifications

Blog

Posts, categories, drafts & publishing

add blog + 14 more features →

What you get

domains/

└── auth/

├── contracts/

│ ├── auth.port.ts

│ ├── session.port.ts

│ └── auth.types.ts

├── domain/

│ ├── auth.service.ts

│ └── session.entity.ts

└── application/

├── sign-up.use-case.ts

└── login.use-case.ts

Every feature follows the same clean structure.

How features work

AI-ready by design.

Each feature ships with AI skills. Your agent understands your code from day one.

Your AI agent, onboarded

Each feature ships with skills — instructions your AI agent reads to extend, test, and debug your code.

Generate, don't write

Ask your agent to add a feature — it follows the same patterns automatically.

Interfaces your AI can read

Typed ports and boundaries. Your agent generates compatible code on the first try.

Explore AI skills

Works with your stack.

Same code, any TypeScript runtime or framework.

Runtimes

Node.js

Bun

Deno

Frameworks

Next.js

Express

Fastify

Hono

NestJS

Ready to stop rewriting?

Copy production-ready features. Ship faster.