Anti-Bot Bypass API
AlterLab bypasses Cloudflare, DataDome, Akamai, PerimeterX, and Kasada with a 98%+ success rate. One API call handles TLS fingerprinting, browser automation, and CAPTCHA solving. Starts at $0.002/request — no monthly subscription.
Simple API, Powerful Results
Get started in minutes with our intuitive API. One request gives you structured data, screenshots, PDFs, and more. No browser management, no infrastructure headaches.
Multi-Format Output
Markdown, JSON, HTML, text
Adaptive Rendering
JS, SPAs, shadow DOM
3 Lines to Integrate
Any language, any stack
Up to 5,000 free scrapes included. No credit card required.
How Anti-Bot Bypass Works
AlterLab uses a 4-stage pipeline to defeat anti-bot systems automatically — no configuration needed.
Detection & Fingerprint Analysis
When you send a URL to the AlterLab API, the system first identifies which anti-bot provider is protecting the target site. Cloudflare, DataDome, Akamai, PerimeterX, and Kasada each use different detection methods — from TLS fingerprint analysis to JavaScript challenges. AlterLab maintains a continuously updated database of protection signatures to select the right bypass strategy before the first request is even sent.
TLS Fingerprinting & Header Rotation
Most anti-bot systems inspect the TLS handshake, HTTP/2 frame ordering, and header composition to distinguish bots from real browsers. AlterLab crafts each request with browser grade TLS fingerprints matching Chrome, Firefox, or Safari profiles. This alone is enough to bypass many Cloudflare bot protection configurations at the lowest cost tier.
Headless Browser Automation
When TLS fingerprinting alone is not enough — for example, on sites that require JavaScript execution, cookie generation, or interaction with Cloudflare Turnstile challenges — AlterLab escalates to a headless browser with stealth plugins. The browser renders the page in a real Chromium environment with anti-detection patches, residential proxy IPs, and randomized viewport and interaction patterns. This defeats DataDome, Akamai Bot Manager, and advanced Cloudflare challenges.
AI-Powered CAPTCHA Solving
For the hardest targets that present CAPTCHAs — reCAPTCHA v2/v3, hCaptcha, FunCaptcha, and image challenges — AlterLab deploys AI solvers that resolve them in seconds. CAPTCHA solving only triggers when detected, keeping costs low. The entire pipeline runs automatically: you send a URL, and AlterLab returns clean HTML content regardless of what protection stands in the way.
Automatic Tier Escalation
Starts cheap, escalates only when needed. Pay only for what works.
Automatic Tier Escalation
Starts cheap, escalates only if needed. Pay only for what works.
AI CAPTCHA Solving
Solves reCAPTCHA, hCaptcha, FunCaptcha automatically.
Browser Fingerprinting
Perfect TLS fingerprints and browser characteristics to avoid detection.
Residential Proxies
Rotating residential IPs included. No proxy management.
Why Use an Anti-Bot Bypass API Instead of DIY
Building your own anti-bot bypass stack is possible — but it comes with hidden costs.
DIY Anti-Bot Bypass
- ×Maintain proxy pools across multiple providers ($200+/month for residential IPs)
- ×Update TLS fingerprints every time Cloudflare or DataDome changes detection
- ×Manage headless browser infrastructure (Puppeteer/Playwright clusters)
- ×Integrate third-party CAPTCHA solving services separately
- ×Debug constantly as anti-bot systems evolve weekly
AlterLab Anti-Bot API
- ✓One API call handles everything — no proxy management, no browser infra
- ✓Always up to date — AlterLab updates bypass techniques automatically
- ✓Pay-per-request from $0.002 — no monthly subscription or minimum commitment
- ✓Built-in CAPTCHA solving, residential proxies, and browser rendering
- ✓98%+ success rate across Cloudflare, DataDome, Akamai, and more
At 10,000+ requests per month, the engineering hours spent maintaining a DIY bypass stack far exceed the cost of an API. AlterLab handles the constantly evolving anti-bot landscape so you can focus on extracting and using the data. See how AlterLab compares to other web scraping APIs on price, features, and bypass success rates.
Proven Success Across Industries
98%+ success rate bypassing Cloudflare and major anti-bot systems.
E-commerce Scraping
Bypass anti-bot protection on major retailers and marketplaces
Price Monitoring
Track competitor pricing without getting blocked by anti-bot systems
Travel & Booking
Scrape flight prices and hotel rates protected by Cloudflare
Financial Data
Extract stock prices and financial data from protected sources
Most Cost-Effective Solution
Only pay for the tier needed to bypass protection.
Why Teams Switch to AlterLab
Smart routing, no subscriptions, balance that never expires
| Feature | AlterLab You are here | ScraperAPI | Bright Data | Firecrawl |
|---|---|---|---|---|
Avg cost (real workload) Smart routing vs flat rate | ~$0.001 | $0.00049/credit | $0.0015 | $0.0063 |
Simple scrape Basic HTTP request | $0.0002 | $0.00049 | $0.0015 | $0.0063 |
JS rendering Full browser render | $0.004 | $0.0049 | $0.0015 | $0.0063 |
Free tier Free requests to start | Up to 5,000 scrapes | 5,000 credits | None | 500 scrapes |
Minimum Smallest purchase | $10 one-time | $49/month | $0 (PAYG) / $499/mo (subscription) | $19/month |
Balance expires? Does unused balance expire | Never | Monthly | Never (prepaid) / Monthly (subscription) | Monthly |
CAPTCHA solving Built-in CAPTCHA bypass | $0.02/solve | Extra cost | Extra cost | Not available |
Avg cost based on typical content/SEO workload (75% simple, 25% protected). Competitor prices from public pricing pages, March 2026.
Frequently Asked Questions
Anti-Bot Bypass Guides
How to Bypass Cloudflare Bot Protection
All 6 detection layers explained: TLS fingerprinting, JS challenges, Turnstile, and more.
How to Scrape DataDome Protected Sites
DataDome ML scoring, sensor data, and the datadome cookie trust system explained.
How to Bypass PerimeterX / HUMAN Security
BotGuard sensor data collection, _px3 cookie, and behavioral ML bypass guide.
Cloudflare vs DataDome vs PerimeterX
Side-by-side comparison: detection mechanisms, bypass difficulty, and cost per tier.
Your first scrape.
Sixty seconds.
$1 free balance. No credit card. No SDK.
Just a POST request.
No credit card required · Up to 5,000 free scrapes · Balance never expire