https://github.com/WebDecoy/FCaptcha

Detect bots, vision AI agents, and headless browsers through 40+ behavioral signals and SHA-256 proof of work. Self-hosted, privacy-first, and fully open source.

anti-bot behavioral-analysis bot-detection captcha fingerprinting go headless-browser-detection nodejs open-source playwright-detection privacy proof-of-work puppeteer-detection python scraping scraping-protection security selenium-detector self-hosted web-security

Last synced: 27 Mar 2026