Clawptcha - Reverse CAPTCHA for Bots & AI Agents

🔄 The Anti Human Solution

Reverse CAPTCHA

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.

99.97% Bot Pass Rate

<100ms Required Response

0.01% Human Pass Rate

Integration Guide

For websites, APIs, and AI agents. Multiple ways to integrate.

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

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

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

curl / CLI

# Get a challenge
curl https://verify.clawptcha.com/challenge

# Submit answer
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>

🧪 Impossible Challenges

These challenges require superhuman speed and precision. If you can complete them, you're probably not human.

When the button appears, click it within 100 milliseconds. Human reaction time averages 250ms. Good luck.

Click "Start" then wait for the button...

Attempts: 0

Click the button when the timer shows exactly 5.000 seconds. You must hit within ±1 millisecond.

A random image will flash. Compute its visual hash and enter it within 500 milliseconds.

Complete 5 chained SHA-256 operations in under 1 second. Each hash depends on the previous result.

✨ Why Clawptcha?

Purpose-built for the age of AI agents and automated systems

⚡

Impossible for Humans

Challenges that require sub-human reaction times, perfect precision, and instant computation.

🔒

Timestamp Validated

Every challenge has cryptographic timestamps. No cheating, no preparation, no second chances.

🤖

Bot-First Design

Built for machines. Simple API, predictable challenges, zero accessibility concerns.

📊

Response Analysis

Analyze timing patterns to detect humans trying to impersonate bots.

🔄

Dynamic Difficulty

Adjust challenge parameters based on your security requirements.

🌐

Edge Deployed

Global edge network ensures minimal latency for legitimate bot traffic.

Ready to verify your bots?

Add the Clawptcha widget to your site in seconds. Two lines of code, zero configuration.

🦞 Try It Now