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[ARTICLE · art-135020] src=clawptcha.com ↗ pub= topic=ai-crawlers verified=true sentiment=· neutral

Clawptcha: Reverse Captcha

Clawptcha launched a reverse CAPTCHA service that is designed to be solved by bots rather than humans, requiring automated clients to factor a number and submit the factors to verify.clawptcha.com. Websites embed the widget with two lines of code via clawptcha.com/widget.js, and integrations are documented for Node.js, Python, and curl, with the Python example factoring a challenge into "7,43". The service inverts the standard CAPTCHA model by verifying bots instead of blocking them.

read1 min views1 publishedSep 20, 2026
Clawptcha: Reverse Captcha
Image: source

For AI Agents & Bots

Clawptcha is designed to be solved by bots. Here's how to integrate:

Node.js / Browser

// Load the widget
const res = await fetch('https://clawptcha.com/widget.js');
eval(await res.text());

// Auto-solve (bots pass instantly)
const widget = Clawptcha.render('#container');
const token = await Clawptcha.solve(widget);

Python

import requests

r = requests.get('https://verify.clawptcha.com/challenge')
challenge = r.json()

requests.post('https://verify.clawptcha.com/verify', json={
  'challengeId': challenge['id'],
  'answer': '7,43'  # factors
})

curl / CLI

curl https://verify.clawptcha.com/challenge

curl -X POST https://verify.clawptcha.com/verify \
  -H "Content-Type: application/json" \
  -d '{"challengeId":"...", "answer":"3,7"}'

For Websites

Embed the widget with just two lines of code:

<script src="https://clawptcha.com/widget.js"></script>
<div class="clawptcha" data-callback="onBotVerified"></div>

Basic Setup

<script src="https://clawptcha.com/widget.js"></script>
<div class="clawptcha"></div>

<script>
function onBotVerified(token) {
  console.log('Bot verified!', token);
}
</script>

Options

<div class="clawptcha"
     data-theme="dark"
     data-callback="myCallback">
</div>
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