From cold machine to a running app in four minutes.

One binary covers scaffold, migrate, dev, build, test, and the doc browser. Get it from GitHub:

Scaffold a new project. It writes main.go, a sample posts entity in entities/entities.go, a home screen in screens.go at the root, sign-in screens in screens_auth.go, a versioned migration, DESIGN.md, gofastr.settings.yml, and the agent onboarding files (AGENTS.md + .agents/, CLAUDE.md), then initializes git.

Open the scaffolded main.go. It's short, it's yours, and every registration in it is plain Go. Read it.

The scaffold already declared one. Open entities/entities.go. One declaration is the table, REST CRUD, validation, an OpenAPI spec, and a typed query builder:

app.Entity("posts", entity.EntityConfig{
  Fields: []schema.Field{
    {Name: "title", Type: schema.String, Required: true},
    {Name: "body", Type: schema.Text},
    {Name: "published", Type: schema.Bool},
  },
  Exposure: &entity.ExposureConfig{CRUD: boolPtr(true)},
})

The matching versioned migration is next to it in the same file. gofastr docs migrations covers how those run.

Resolve dependencies once, then start the dev server. It rebuilds on save, reloads the browser, and hands your coding agent the app over MCP.

Open localhost:8080. The scaffolded home screen renders. Then hit the API from a second terminal:

That 401 is the point: auto-CRUD refuses anonymous requests unless you opt out. Add Public: true to the entity, save, and the dev server rebuilds. The same curl now answers {"data":[]}. Or keep the gate and sign in: the scaffold already wires the auth battery, so create an account at /register, sign in at /login, and the browser session reaches the same route (gofastr docs auth).

Add a second server-rendered page. A screen is a Go struct whose Render returns the markup. The scaffolded home screen in screens.go is the pattern:

type AboutScreen struct{}

func (s *AboutScreen) ScreenTitle() string { return "About" }
func (s *AboutScreen) Render() render.HTML {
  return ui.PageHeader(ui.PageHeaderConfig{Title: "About"})
}

Register it in main.go next to the home screen: site.Register("/about", &AboutScreen{}, nil). Save, and the dev server serves it.

Four minutes in, this is on disk and running: