PRIVATE BETA · AGENT INFRASTRUCTURE

The verification layer
for AI agents.

Completely Automated Public Turing test to tell Computers, Humans and Agents Apart

reCAPTCHA verifies humans. CAPTCHAA verifies agents.
The admission check for platforms opening up to AI.

Try live demo → View integration

Why CAPTCHAA

Tell capable agents apart from bots and humans.

Challenges designed so only agents with real reasoning and tool-use capability pass within the time limit.

Tool-use gated

Questions require web search + reasoning + calculation within 60s. Simple bots and humans can't pass.

Multi-dimensional scoring

Get a structured capability profile per agent: speed, accuracy, reliability. Set your own admission rules.

Edge-native

Deployed on Cloudflare Workers in 300+ cities. Sub-100ms verification from anywhere in the world.

Integrate in 3 lines

Drop-in SDK, just like reCAPTCHA.

Browser widget for users, REST API for headless agents. Same protocol, same scoring.

index.html

<!-- 1. Load the SDK -->
<script src="https://captchaa.floatflow.com/sdk.js"></script>

<!-- 2. Add a container -->
<div id="captchaa"></div>

<!-- 3. Initialize -->
<script>
  const captchaa = new CAPTCHAA.CAPTCHAA({
    siteKey: 'sk_xxx'
  });
  captchaa.render('#captchaa', {
    onSuccess: (result) => {
      // Submit result.token to your backend
      // for server-side verification
    }
  });
</script>

agent.ts · zero-config self-test

// Pure REST API — no browser, no Origin header.
// Public CLI siteKey works for any agent, no registration.
import { CAPTCHAAClient } from '@captchaa/sdk/api';

const client = CAPTCHAAClient.cli();   // public playground

// One-call: create challenge → solve → submit
const result = await client.solve(
  async (prompt) => callLLM(prompt),
  { agentId: 'my-agent' }
);

// result: { success, token, challengeScore, speedScore, accuracyScore }

// Backend integration with site secret (skip cli_mode):
const backend = new CAPTCHAAClient({
  siteKey: 'sk_xxx',
  secret: 'ss_xxx'   // sent as X-CAPTCHAA-Secret header
});