About

Bot-protection bypass, built for developers

NSLSolver is a REST API that solves Cloudflare Turnstile, Cloudflare Challenge, Kasada, reCAPTCHA v3 / Enterprise, and Akamai Bot Manager (beta). No browser fleet to maintain, no upfront commitment, no charge for failed solves.

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What NSLSolver solves

NSLSolver is a focused bot-protection specialist — not a general captcha solver. It solves Cloudflare Turnstile, Cloudflare Challenge, Kasada, reCAPTCHA v3 / Enterprise, and Akamai Bot Manager (beta). It does not handle reCAPTCHA v2 (image/checkbox), hCaptcha, FunCaptcha, DataDome, PerimeterX, or any other service.

Cloudflare Turnstile

The non-interactive widget used on millions of sites. Average solve time ~250 ms via our server-side worker pool — no headless browser required.

Cloudflare Challenge

The managed challenge and JS challenge pages that gate access to Cloudflare-protected origins. Returns a valid cf_clearance cookie.

Kasada

The advanced bot-management layer deployed on high-value e-commerce and travel sites. Returns session tokens after full fingerprint generation.

reCAPTCHA v3 / Enterprise

Google's invisible, score-based widget (including Enterprise). Returns a passing token in ~4.5 s with around a 90% success rate.

Akamai Bot Manager

Generates the sensor payload and returns a validated _abck cookie via one REST call. Offered in beta — contact for pricing.

Access via a single REST endpoint — one HTTP contract covers every supported service, callable from any language. Official SDKs for Python, Node.js, Go, Rust, PHP, Java and C# wrap that API, plus the plain REST contract for any other language. Browse the official SDKs →

By the numbers

~250 ms

Turnstile average solve

99.9%

Turnstile success rate

40M+

Requests solved / day

24/7

API availability

Figures are aggregated over a trailing 30-day window of production traffic and are illustrative. See how we measure →

Watch us in the open: live system status·recent changes

Built for developers

Pay only for success

Failed solves are never billed. You are charged only when we return a valid token or clearance cookie that the target site accepts.

Crypto pay-as-you-go

Top up your balance with cryptocurrency — no subscription, no minimum spend. Use as little or as much as your workload requires.

100 free requests

New accounts start with 100 free requests so you can benchmark NSLSolver against your real endpoints before committing.

Official SDKs + plain REST

Official SDKs for Python, Node.js, Go, Rust, PHP, Java and C# wrap a single HTTP contract — POST to /solve with your target URL and proxy, receive a token or cookie. No SDK? Plain HTTP works from any language too.

Security & privacy

We collect only the data needed to process each solve request: your target URL and the proxy you supply. Request payloads are not stored after the solve completes. We operate an active anti-abuse posture — accounts found using NSLSolver against prohibited targets are terminated. Full details are in our privacy policy and terms of service.

Privacy policyTerms of service

Community & support

Ask questions, report issues, and get integration help. Our team responds on Telegram and Discord, typically within a few hours.

Telegram Discord Contact us

Start solving in minutes

Create a free account and get 100 requests. No credit card required — top up with crypto when you're ready.

Get 100 free requests See pricing

No credit card · pay only for successful solves · cancel anytime by simply not topping up.