> For the complete documentation index, see [llms.txt](https://docs.integral.link/size/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.integral.link/size/developers/api.md).

# API

### API Key

#### Making Requests

All API requests must include a header with a valid API key

```
// API Key Header
'Authorization': '...api-key...'
```

#### Getting an API Key

Please send API key requests to <info@integral.link> and include the following information:

1. **Email address** - so we can reach you and your team in-case of future API changes
2. **Organization name**
3. A few sentences describing what you're building with our API

### Endpoint

<https://size-api.integral.link>

### Documentation

<https://size-api-docs.integral.link>