tzinContract-first TypeScript framework

import { t } from '@carlos-tzin/tzin'
import { contract, impl, createApp, listen } from '@carlos-tzin/tzin'

const getUser = contract({
  method: 'GET',
  path: '/users/:id',
  params: t.Object({ id: t.String() }),
  responses: {
    200: t.Object({ id: t.String(), name: t.String(), tags: t.Array(t.String()) }),
    404: t.Object({ error: t.String() }),
  },
})

export const getUserRoute = impl(getUser, async ({ params }) => {
  const user = await findUser(params.id)
  if (!user) throw new HttpError(404, 'user not found')
  return { status: 200, body: user }
})

const app = createApp([getUserRoute], { openapi: true, mcp: true })
listen(app, 3000)