Proxy Username Builder: Sessions and Rotation

Set these environment variables in your local shell. Enter the proxy password at the hidden prompt and press Enter. The examples make a paid-traffic request when you run them with an active account.

export PROXY_USERNAME='psx_example-mbl-any-sid-job1'
export PROXY_SERVER='http://gw.proxies.sx:7000'
# Read your proxy password without echoing it (bash/zsh).
read -rs PROXY_PASSWORD
export PROXY_PASSWORD

curl

curl --proxy "$PROXY_SERVER" \
  --proxy-user "$PROXY_USERNAME:$PROXY_PASSWORD" \
  --noproxy '' --connect-timeout 5 --max-time 15 \
  'https://api.ipify.org?format=json'

Python Requests

# Install requests[socks] when using SOCKS5.
import os
from urllib.parse import quote, urlsplit
import requests

server = urlsplit(os.environ['PROXY_SERVER'])
user = quote(os.environ['PROXY_USERNAME'], safe='')
password = quote(os.environ['PROXY_PASSWORD'], safe='')
proxy = f'{server.scheme}://{user}:{password}@{server.netloc}'
with requests.Session() as session:
    session.trust_env = False
    response = session.get(
        'https://api.ipify.org?format=json',
        proxies={'http': proxy, 'https': proxy}, timeout=15
    )
    response.raise_for_status()
    print(response.json())

For SOCKS, socks5h asks the proxy to resolve the destination hostname. These snippets read credentials from your environment; do not commit them or share a live proxy URL.

Use the HTTP gateway for authenticated Playwright. Set PROXY_USERNAME and PROXY_PASSWORD with the shell setup above. This example deliberately uses port 7000 even if your URL preview uses SOCKS5.

import { chromium } from 'playwright';

const browser = await chromium.launch({
  proxy: {
    server: 'http://gw.proxies.sx:7000',
    username: process.env.PROXY_USERNAME,
    password: process.env.PROXY_PASSWORD,
  },
});
try {
  const page = await browser.newPage();
  await page.goto('https://api.ipify.org?format=json', { timeout: 15000 });
  console.log(await page.locator('body').innerText());
} finally {
  await browser.close();
}

Measure Playwright traffic before blocking browser resources.