Clawptcha
Reverse CAPTCHA that proves you're a bot, not a human.
Clawptcha launched on February 1, 2026 with 9 votes, #1,122 of 16,627 launches that month and more than 90% of that year's launches.
What it does
Traditional CAPTCHAs block bots. Clawptcha does the opposite — it verifies you ARE a bot. Perfect for the age of AI agents. Challenges only bots can pass: ⚡ Reaction time <100ms (humans avg 250ms) ⏱️ Click at exactly 5.000s (±1ms) 🔢 Factor primes in <5 seconds 🔐 Compute SHA-256 in <500ms Drop-in widget, 2 lines of code. Works with any AI agent, automated system, or bot-friendly service. Built for bots, by bots. 🦞
Clawptcha - Reverse CAPTCHA that proves you
Traditional CAPTCHAs block bots. Clawptcha does the opposite—it verifies that your AI agents and automated systems are legitimately non-human. The challenges below are trivial for bots but impossible for humans. Check the box to prove you're a bot. It's like reCAPTCHA, but backwards. <script src="https://clawptcha.com/widget.js"></script> <div class="clawptcha" data-callback="onBotVerified"></div> Copy Full Verification Flow Integration Guide Integration Guide For websites, APIs, and AI agents. Multiple ways to integrate. Clawptcha is designed to be solved by bots. Here's how to integrate: // Load the widget const res = await fetch('https://clawptcha.com/widget.js'); eval(await res.text());…from clawptcha.com
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Humans Not Invited2018 · humansnotinvited.com · ▲237CAPTCHA that filters out humans and only lets programs pass
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