> For the complete documentation index, see [llms.txt](https://docs.madjik.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.madjik.io/getting-started/authentication.md).

# Authentication

All API requests require authentication using an API key.

## Getting an API Key

1. Visit [madjik.io/pricing](https://madjik.io/pricing)
2. Choose your plan
3. Your API key will be available in your dashboard

## Using Your API Key

Include your API key in the `Authorization` header:

```bash
curl -X GET "https://api.madjik.io/v1/metrics/ME10001" \
  -H "Authorization: Bearer YOUR_API_KEY"
```

## Python Example

```python
import requests

API_KEY = "your_api_key_here"
BASE_URL = "https://api.madjik.io/v1"

headers = {
    "Authorization": f"Bearer {API_KEY}"
}

response = requests.get(f"{BASE_URL}/metrics/ME10001", headers=headers)
data = response.json()
```

## JavaScript Example

```javascript
const API_KEY = 'your_api_key_here';
const BASE_URL = 'https://api.madjik.io/v1';

const response = await fetch(`${BASE_URL}/metrics/ME10001`, {
  headers: {
    'Authorization': `Bearer ${API_KEY}`
  }
});
const data = await response.json();
```

## Error Responses

| Code | Meaning                                      |
| ---- | -------------------------------------------- |
| 401  | Invalid or missing API key                   |
| 403  | API key doesn't have access to this resource |
| 429  | Rate limit exceeded                          |


---

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