🧩 Captcha Solving

17 captcha types with a 100% accuracy mode — from simple images to Cloudflare Turnstile and Yandex SmartCaptcha.

from $15.00 / 1,000 POST /v1/query USDC on Base · x402

What you get

17 types: reCAPTCHA v2/v3, hCaptcha, Turnstile, Geetest, DataDome
Also Amazon WAF, VK, Yandex SmartCaptcha, MTCaptcha, Prosopo, Lemin
100% accuracy mode included — solved until correct
Image captchas, sliders, click challenges and tokens
Per-solve billing, no subscription

Tools in this group

Tool	What it does	Docs
`captcha_image`	Image captcha to text	Full docs →
`captcha_recaptcha`	reCAPTCHA v2	Full docs →
`captcha_recaptcha_v3`	reCAPTCHA v3	Full docs →
`captcha_hcaptcha`	hCaptcha	Full docs →
`captcha_turnstile`	Cloudflare Turnstile	Full docs →
`captcha_smartcaptcha`	Yandex SmartCaptcha	Full docs →
`captcha_geetest`	GeeTest	Full docs →
`captcha_datadome`	DataDome	Full docs →
`captcha_funcaptcha`	FunCaptcha (Arkose)	Full docs →
`captcha_amazon`	Amazon WAF	Full docs →
`captcha_mtcaptcha`	MTCaptcha	Full docs →
`captcha_prosopo`	Prosopo Procaptcha	Full docs →
`captcha_lemine`	Lemin Cropped	Full docs →
`captcha_vk`	VK Captcha	Full docs →
`captcha_geetest_v4`	GeeTest v4	Full docs →
`captcha_cloudflare`	Cloudflare Challenge	Full docs →
`captcha_capy`	Capy Puzzle	Full docs →

Request

curl -X POST https://api.serp-base.com/v1/query \
  -H "Content-Type: application/json" \
  -d '{"tool": "captcha_image", "image": "<base64-encoded-image>"}'

Key parameters

Field	Description
`image`	Base64 image (image captchas)
`sitekey + url`	For reCAPTCHA / hCaptcha / Turnstile
`invisible`	1 = invisible captcha

Response

{
  "solution": "x4p9",
  "confidence": "high"
}

Payment: pay per request with USDC on Base via the x402 protocol. Gas is covered by the facilitator. Charged only when data is returned. Test the whole flow free on Base Sepolia.

Read full API docs → Get API key