Captcha verify · Captcha Verify

by Captcha verify

POSTBaseSolanaArbitrumPolygonMonadAvalancheeip155:1329OptimismFraxtaleip155:42220stellar:pubnetalgorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=

$0.002

per call · USD Coin on Base

Validate a Cloudflare Turnstile, Google reCAPTCHA, or hCaptcha token server-side. You pass your OWN provider secret plus the token from the client; we relay to the provider's siteverify endpoint (never logged) and return the normalized verdict (success, hostname, action, score, error codes). The legitimate backend half of bot protection - no solving, no bypass.

Endpoint

POST https://agent402.tools/api/captcha-verify

4

Calls / 30d

1

Unique payers / 30d

Aug 31

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/captcha-verify", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "provider": "turnstile",
    "secret": "1x0000000000000000000000000000000AA",
    "token": "XXXX.DUMMY.TOKEN.XXXX"
  }),
});
const data = await res.json();
cURL
curl -X POST \
  "https://agent402.tools/api/captcha-verify" \
  -H "Content-Type: application/json" \
  -d '{"provider":"turnstile","secret":"1x0000000000000000000000000000000AA","token":"XXXX.DUMMY.TOKEN.XXXX"}' \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "errorCodes": [],
  "hostname": "example.com",
  "provider": "turnstile",
  "success": true
}

Payment details

Pay to0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana, Arbitrum, Polygon, Monad, Avalanche, eip155:1329, Optimism, Fraxtal, eip155:42220, stellar:pubnet, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
Schemesexact, upto

Is this your API?

Pin it to the top of Developer Tools and the homepage with a featured placement.

Get featured →

More from Captcha verify & similar services

L

Loyalspark · Recipient API Offers

api.loyalspark.online

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

GETBaseDeveloper Tools
$0.001 / call1.2k calls / 30d
L

Loyalspark · Workflow Reward Status

api.loyalspark.online

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

GETBaseDeveloper Tools
$0.001 / call560 calls / 30d
L

Loyalspark · Recipient API Vouchers

api.loyalspark.online

Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real value with every purchase, and AI agents automate the rest via REST and MCP. Free plan mints up to 1,000 tokens per month; every call is scoped by row-level security to the wallet behind the API key. 16 skill guides at loyalspark.online/.well-known/skills/index.md.

GETBaseDeveloper Tools
$0.001 / call536 calls / 30d