# SEM-005: action has no name

**Error**: the page doesn't build until this is fixed.

An action's name, like `cart.add`, is the address the button posts to (`/_a/cart.add`), the route your server
handles, and the tool name AI agents call it by.

## Fails

```hypra fails
page(title: "Shoes", description: "All our running shoes, from light racers to trail shoes.") {
  h1 "Shoes"
  action(id: 42) "Add to cart"
}
```

## Fixed

```hypra passes
page(title: "Shoes", description: "All our running shoes, from light racers to trail shoes.") {
  h1 "Shoes"
  action("cart.add", id: 42) "Add to cart"
}
```