Proxy & API Key Checker
Validate API keys and test proxy lists from one desktop app
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Proxy & API Key Checker - Validate API keys and test proxy lists from one desktop app

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A local desktop proxy checker and API key validator. Test HTTP/HTTPS/SOCKS proxies against a target URL, search for specific text, and (optionally) run a headless browser with screenshots. Validate OpenAI, Gemini, YouTube, or custom API keys in batch with retries, jitter, and a global RPS limiter. Export clean CSV/JSON reports.

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Hi folks, this started as an internal helper. I needed a quick way to validate keys (OpenAI/Gemini/YouTube and custom endpoints) before wiring them into projects, and a proxy checker that could do more than “alive/dead”. So I put both into one desktop app: batch runs with limits (RPS/concurrency), retries and jitter, clean imports, and exportable reports. For proxies there’s URL mode, HTML text search, and optional headless browsing + screenshots for cases where JS matters. It’s open-source, runs locally, and doesn’t do telemetry. If you try it, tell me what workflows you’re missing, I’ll prioritize based on real use.