> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solute.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

> How to authenticate with the Solute backend API

## Authentication

All API requests must be authenticated using an API key.

## API Key Header

Include your API key in the `X-Api-Key` header for all requests:

```bash theme={null}
curl -X POST https://api.solute.dev/api/events \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: your_api_key_here" \
  -d '{...}'
```

## Getting Your API Key

Get your API key from your Solute dashboard. The API key is associated with your lab/organization.

<Warning>
  Keep your API key secure. Never expose it in client-side code or commit it to version control.
</Warning>

## Invalid API Key

If the API key is missing or invalid, the server should return:

```json theme={null}
{
  "error": {
    "code": "INVALID_API_KEY",
    "message": "Invalid or missing API key"
  },
  "statusCode": 401
}
```

## Next Steps

<CardGroup cols={2}>
  <Card title="Events Endpoint" icon="chart-line" href="/backend-api/events" />

  <Card title="Feature Flags Endpoint" icon="flask" href="/backend-api/feature-flags" />
</CardGroup>