---
description: Use the sky requirement in a Crafttweaker recipe
---

# Sky

U**se this method to add a** [**sky requirement**](../../../recipes/requirements/sky) **to the recipe.**

```javascript
.mustSeeSky()
```

### Example

The following recipe will require the machine to have a clear access to the sky :&#x20;

```javascript
<recipetype:custommachinery:custom_machine>.create("custommachinery:power_crusher", 20)
.mustSeeSky()
.build();
```
