# Appendix F: Request & Response Formats

# Request & Response Formats

## Request Headers
- `X-BL-API-Key`: Your API key (required)
- `Content-Type`: application/json (required)

## Success Response
```json
{
  "status": "success",
  "message": "Operation completed",
  "data": {...}
}
```

## Error Response
```json
{
  "status": "failure",
  "message": "Operation failed",
  "errors": ["Error message"]
}
```

## Data Types
- String: quoted text
- Number: integer or decimal
- Boolean: true/false
- Date: ISO 8601 format
- Array: [item1, item2]
- Object: {key: value}