Proxy Cyber guides https://proxy-cyber.com/guides Practical guides on using residential, ISP, datacenter and mobile proxies: integrations, sessions, testing, budgets, buying and paying in crypto. en How to use proxies with Python requests, httpx and aiohttp https://proxy-cyber.com/guides/python-requests-httpx https://proxy-cyber.com/guides/python-requests-httpx Sat, 26 Sep 2026 04:40:01 GMT Integrations Configure Proxy Cyber proxies in Python requests, httpx and aiohttp: rotating and sticky sessions, SOCKS5 with remote DNS, retries and per-request targeting. How to use proxies in Node.js with fetch, undici, axios and got https://proxy-cyber.com/guides/nodejs-fetch-undici-axios https://proxy-cyber.com/guides/nodejs-fetch-undici-axios Sat, 26 Sep 2026 04:40:01 GMT Integrations Route Node.js traffic through a proxy: undici ProxyAgent for fetch, https-proxy-agent for axios and got, SOCKS5 agents, sticky sessions and rotation. cURL through a proxy: every option that matters, with examples https://proxy-cyber.com/guides/curl-proxy-options https://proxy-cyber.com/guides/curl-proxy-options Sat, 26 Sep 2026 04:40:01 GMT Integrations Use cURL with a proxy: -x and --proxy-user, HTTPS tunnelling, socks5h remote DNS, environment variables and reading 407 or 502 in verbose output. Proxies in Go and PHP: net/http Transport, x/net/proxy, cURL and Guzzle https://proxy-cyber.com/guides/go-and-php-proxies https://proxy-cyber.com/guides/go-and-php-proxies Sat, 26 Sep 2026 04:40:01 GMT Integrations Configure proxies in Go (http.Transport, per-request proxy, SOCKS5 dialer) and PHP (cURL options, Guzzle), with sticky sessions and connection reuse. Using proxies with Playwright: one exit per browser or per context https://proxy-cyber.com/guides/playwright-proxy https://proxy-cyber.com/guides/playwright-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Set a proxy in Playwright for Python and Node.js: launch-level and per-context proxies, credentials, sticky sessions, blocking images to save GB. Using proxies with Puppeteer and headless Chrome https://proxy-cyber.com/guides/puppeteer-proxy https://proxy-cyber.com/guides/puppeteer-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Set a proxy in Puppeteer: --proxy-server and page.authenticate, one sticky session per browser, request interception to block images, error diagnosis. Using proxies with Selenium WebDriver (Chrome and Firefox) https://proxy-cyber.com/guides/selenium-proxy https://proxy-cyber.com/guides/selenium-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Selenium cannot type proxy credentials: use IP whitelisting with --proxy-server, or Selenium Wire for username-password proxies. Chrome and Firefox examples. Rotating and sticky proxies in Scrapy with a downloader middleware https://proxy-cyber.com/guides/scrapy-rotating-proxies https://proxy-cyber.com/guides/scrapy-rotating-proxies Sat, 26 Sep 2026 04:40:01 GMT Integrations Route a Scrapy spider through a proxy: request.meta, a middleware for rotating or sticky usernames per request, retries on 403 and 429, AutoThrottle. Configuring a proxy in Chrome, Firefox and at the operating-system level https://proxy-cyber.com/guides/browser-and-system-proxy https://proxy-cyber.com/guides/browser-and-system-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Use a proxy from Chrome, Firefox, macOS or Windows: flags, manual settings with SOCKS DNS, PAC files, credentials and the WebRTC setting that stops leaks. Proxies in anti-detect browsers: one profile, one country, one sticky session https://proxy-cyber.com/guides/anti-detect-browsers-proxy https://proxy-cyber.com/guides/anti-detect-browsers-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Set proxies in anti-detect browsers: host:port:user:pass fields, one sticky session per profile, HTTP vs SOCKS5, time zone alignment, ISP or mobile for accounts. Giving an AI agent a proxy: environment variables, Playwright MCP and browser agents https://proxy-cyber.com/guides/ai-agents-proxy https://proxy-cyber.com/guides/ai-agents-proxy Sat, 26 Sep 2026 04:40:01 GMT Integrations Give an AI agent a proxy: HTTPS_PROXY for Python and Node, undici EnvHttpProxyAgent, Playwright MCP --proxy-server, one session per task, spending ceilings. Rotating vs sticky sessions: how to choose, per request https://proxy-cyber.com/guides/rotating-vs-sticky-sessions https://proxy-cyber.com/guides/rotating-vs-sticky-sessions Sat, 26 Sep 2026 04:40:01 GMT Method When a proxy request should get a new IP and when it should keep one: a decision table for scraping, search, carts, logins and accounts, with the exact username. How to test a proxy: exit IP, location, leaks, headers, speed and success rate https://proxy-cyber.com/guides/test-a-proxy https://proxy-cyber.com/guides/test-a-proxy Sat, 26 Sep 2026 04:40:01 GMT Method A ten-minute proxy test: confirm the exit and its location, check headers and DNS or WebRTC leaks, measure latency and throughput, sample success on your target. Troubleshooting proxy errors: 407, 400, 402, 403, 429, 502 and timeouts https://proxy-cyber.com/guides/troubleshoot-proxy-errors https://proxy-cyber.com/guides/troubleshoot-proxy-errors Sat, 26 Sep 2026 04:40:01 GMT Method Tell gateway errors from destination errors, map 407, 400, 402, 403, 429, 502 and timeouts to their fix, and decide when to retry, rotate, slow down or switch network. How to estimate a proxy budget: pages × size × rate, with worked examples https://proxy-cyber.com/guides/estimate-a-proxy-budget https://proxy-cyber.com/guides/estimate-a-proxy-budget Sat, 26 Sep 2026 04:40:01 GMT Method Turn a workload into a monthly proxy budget: page sizes by type, the per-GB formula, per-IP maths for ISP and datacenter, worked examples, five traffic-saving habits. How to choose a proxy provider: a 12-point checklist https://proxy-cyber.com/guides/choose-a-proxy-provider https://proxy-cyber.com/guides/choose-a-proxy-provider Sat, 26 Sep 2026 04:40:01 GMT Buying Twelve checks before buying proxies: sourcing, real coverage, targeting, sessions, protocols, metering, expiry, pricing transparency, payment and KYC, docs, status, rules. Buying proxies with cryptocurrency: a step-by-step guide https://proxy-cyber.com/guides/buy-proxies-with-crypto https://proxy-cyber.com/guides/buy-proxies-with-crypto Sat, 26 Sep 2026 04:40:01 GMT Buying Pay for proxies in Bitcoin, USDT, Monero or another coin: choose by fee and speed, send the exact amount on the right network, confirmations, refunds, privacy.