# Proxy Configuation

Source: https://docs.evomi.com/scraping-products-instructions/scraper-api/parameters/proxy/

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `proxy_type` | string | `residential` | Proxy type: `residential` or `datacenter` |
| `proxy_country` | string | `US` | Two-letter ISO country code (e.g., `GB`, `DE`, `JP`) |
| `proxy_session_id` | string | - | Session ID (6-8 characters) for IP persistence |
| `proxy_overwrite` | string | - | Full proxy URL to override default proxies |

## Proxy Types Comparison

| Feature | Premium (Residential) | Datacenter |
|---------|----------------------|------------|
| Request Mode Cost | 2 credits | 1 credit |
| Browser Mode Cost | 5 credits | ❌ Not supported |
| Auto Mode Cost | 2-6 credits | ❌ Not supported |
| Success Rate | Highest | High |
| Speed | Fast | Fastest |
| Best For | Browser/auto modes, regional content testing, complex sites | Request mode only, public APIs, high-volume scraping |

**Session Management Example:**
```json
{
  "proxy_session_id": "cart123",
  "proxy_country": "US"
}
```
Use the same session ID across multiple requests to maintain the same IP address—perfect for login flows or shopping carts.

See [Proxy Types](/scraping-products-instructions/scraper-api/proxy-types/) for detailed information.

**Captcha Solver:** The automatic captcha solver is only active when using `mode="browser"` and `proxy_type="residential"`. It is not possible to use the automatic captcha solver with datacenter proxies or request mode.