API Generator

Create endpoints from requirements. User never writes routes.

Process

1. Identify resources

   • "Manage expenses" → /api/expenses
   • "User profile" → /api/users/me

2. Generate CRUD

   • GET (list, single)
   • POST (create)
   • PUT/PATCH (update)
   • DELETE (remove)

3. Add validation

   • Input schemas
   • Error handling
   • Auth middleware

4. Generate OpenAPI

   • Auto-document all endpoints
   • For future integrations

Template-Specific

Next.js API Routes

// app/api/expenses/route.ts
export async function GET() {
  const expenses = await db.expenses.findMany();
  return Response.json(expenses);
}

export async function POST(req: Request) {
  const data = await req.json();
  const expense = await db.expenses.create({ data });
  return Response.json(expense);
}

FastAPI

@router.get("/expenses")
async def list_expenses(db: Session = Depends(get_db)):
    return db.query(Expense).all()

@router.post("/expenses")
async def create_expense(data: ExpenseCreate, db: Session = Depends(get_db)):
    expense = Expense(**data.dict())
    db.add(expense)
    db.commit()
    return expense

Hono

app.get('/expenses', async (c) => {
  const expenses = await db.select().from(expensesTable);
  return c.json(expenses);
});

app.post('/expenses', async (c) => {
  const data = await c.req.json();
  const [expense] = await db.insert(expensesTable).values(data).returning();
  return c.json(expense);
});

Auto-Generated Features

Feature	Implementation
Pagination	?page=1&limit=20
Filtering	?category=food
Sorting	?sort=amount&order=desc
Auth	Middleware checks token
Validation	Schema validates input

User Experience

User: "Add expense tracking"

Internally:

1. Generate /api/expenses endpoints
2. Add validation schemas
3. Connect to database
4. Add auth middleware
5. Generate OpenAPI spec

User sees: "✅ Expense API ready"