Mistral as a Janitor AI Proxy: The Direct API, the OpenRouter Route, and the $10 of Monthly Credits on Mistral's Free Plan
Mistral's models speak the OpenAI format natively, so they drop into Janitor AI's proxy field with no compatibility layer: https://api.mistral.ai/v1/chat/completions and a key from Mistral's console. What Mistral Large and Small cost per message at listed prices, the free plan on Mistral's pricing page that lists $10 a month in API credits, the OpenRouter route with today's ids, and the limits and refusals no proxy changes.
net::ERR_PROXY_CONNECTION_FAILED in Puppeteer, Playwright, and Selenium: Causes and Fixes
Which proxy mistake gives which net:: error in headless Chrome. Measured in ten cases: dead addresses, passwords, credentials in the URL, schemes Chrome rejects, refused tunnels. SOCKS5 logins, Docker and CI from the Chromium source and the docs.
npm Proxy Settings and Errors: .npmrc, HTTPS_PROXY and SOCKS, Tested
What npm does with a proxy, measured in 42 setups on npm 11.8 and 10.9: which setting wins, why HTTP_PROXY and --proxy=false mislead, SOCKS5, the certificate fix, and what each error line means.
pip Behind a Proxy: Fix "Cannot Connect to Proxy", 407, and Certificate Errors
How pip finds its proxy, the --proxy flag and pip.conf keys, and the fix for each error: cannot connect to proxy, 407 in the tunnel, and certificate verify failed.
Proxies for MCP Servers: The Fetch-Heavy Ones Need Residential IPs, and Where the Proxy Goes
An MCP server that fetches the web, a scraper, a search tool, a price checker, hits the same bot walls and per-IP limits as any client, so it needs residential proxies. One that talks only to a private API does not. This covers which MCP servers need a proxy, where it goes in the server, and how to wire it in the common runtimes.
Proxies With the Claude Agent SDK: Proxying the Agents You Build, Not the Model
The Claude Agent SDK is Claude Code as a library, so the agents you build with it browse the web through built-in and custom tools. This guide shows where a proxy goes: in the custom tools and subprocess code that fetch sites, and the process-level HTTP(S)_PROXY for reachability, with the honest note that the SDK's own model calls do not want one.
A "Proxy Authentication Required" Popup Keeps Appearing: Where It Comes From and How to Stop It
A proxy sign-in box in Chrome, Firefox, Windows, VS Code or IntelliJ that keeps coming back. Why it returns, measured in Chrome, whose proxy it is, and how to stop it safely.
"Proxy Error: The Proxy Server Received an Invalid Response From an Upstream Server" (Apache 502)
Apache's mod_proxy reporting that the server behind it did not answer properly. What each Reason line means, why your own proxy settings are irrelevant, and the admin fixes.
The Proxy Server Isn't Responding: 5 Fixes for Windows and Edge
This message comes from Windows itself, not a website. Where the proxy setting behind it lives, how to clear it in every place Windows keeps it, and what to do next.
Proxy Server on PS5, PS4, and Switch: Use or Do Not Use, and What It Cannot Fix
Consoles ask about a proxy server during manual setup. For almost everyone the answer is Do Not Use. When one helps, what it cannot fix (NAT type, lag), and how to set it.
Proxy Settings Keep Turning Back On? Find What Is Writing Them
Something keeps rewriting your proxy setting: a leftover VPN, a policy or profile, or malware. How to identify the writer on Windows and Mac and remove it for good.
Proxys für Web Scraping: der praktische Leitfaden
Proxys für Web Scraping: warum du sie brauchst, welcher Typ zu welchem Ziel passt, wie viele IPs, rotierend oder statisch, und wie du Sperren vermeidest statt sie mit CAPTCHA-Lösern zu überkleben.
Reddit "You've Been Blocked by Network Security": Why It Happens and How to Fix It
Reddit shows this page when your address looks like a VPN, proxy, or datacenter range. What triggers it, the fixes that work, and why logging in is the route Reddit offers.
Scrapy TunnelError: "Could Not Open CONNECT Tunnel With Proxy" (407, 403, 502) Explained
Scrapy's TunnelError means the proxy answered the CONNECT request with a status other than 200. What each status means, the Proxy-Authorization trap, and the fix.
YouTube "Sign in to Confirm You're Not a Bot": Fixes in the Browser and in yt-dlp
Why YouTube asks you to confirm you are not a bot, what yt-dlp adds to the message, and the checks that fix it, in the order 51 bug reports rank them.
SOCKS5 Proxy Errors Explained: General SOCKS Server Failure, Not Allowed by Ruleset, Host Unreachable
SOCKS5 replies are numbered by the protocol, so each error names its cause. What the reply codes and authentication failures mean, and the fix for each.
"Sorry, You Have Been Blocked" (Cloudflare): Why You See It and What Fixes It
Cloudflare's block page means a rule on the site refused your request: your address, your network, or what you sent. Every line explained, from Cloudflare's documentation and 476 reports.
Spotify Error Code 4 and "A Firewall May Be Blocking Spotify": The Proxy Settings Fix
Spotify shows error code 4 when the desktop app cannot reach its servers and blames the firewall or the proxy settings. Which proxy mode to pick, and what else breaks it.
There Is Something Wrong With the Proxy Server: How to Fix It
Chrome and Edge show this when Windows points them at a proxy they cannot reach: nothing listens at its address, or its name does not exist. We tested seven broken proxy setups to show which cause it, and how to fix each.
Unable to Connect to the Proxy Server: Fixes for Every Device
Chrome's older wording for ERR_PROXY_CONNECTION_FAILED, still common on Android and Chromebooks. Where the proxy setting lives on each device and how to clear it.
Windows Could Not Automatically Detect This Network's Proxy Settings: How to Fix It
What the troubleshooter actually checked, why it blames the proxy, and the fixes in order: a leftover proxy setting, WinHTTP, the VPN, Winsock, and the driver.
Proxy Error Codes: What Each Message Means and Who Sent It
Every proxy error comes from one of three places: your machine, the proxy or the site. We sent the same failures to nine clients and recorded what each one prints.
Geo-Testing Your App With Proxies: A QA Playbook
Localised pricing, regional catalogues and country-gated features all ship untested because QA runs from one office. How to verify what each country actually sees, in CI, without a VPN farm.
How to Resell Proxies in 2026: The Business, the Math and the Traps
Most proxy brands you can name are resellers themselves. How the business actually works, what it costs to start, where new resellers die, and how to pick a program that does not bill you before your customers do.
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Proxies that don't die mid-job
Residential, ISP, datacenter and mobile, verified by the same engine that runs tens of millions of checks. They read as a real device and hold up under load. Pay as you go, and your balance never expires. $0.44/GB is the 2,000 GB+ rate; a single gigabyte is $0.50/GB, with no minimum order.
129M+ proxy checks run · 100+ countries · HTTP / HTTPS / SOCKS · re-checked every few minutes · no signup