Cloudflare's bot management can block naive scraping using JavaScript challenges, browser fingerprinting, and WAF rules, but it doesn't stop all scraping outright. A request that renders JavaScript through a real browser and routes through a residential IP can get past it.
Cloudflare's bot management sits in front of a website and evaluates incoming traffic before it reaches the origin server. It looks at IP reputation (is this a known datacenter range?), browser fingerprinting (does this request look like it came from a real browser engine?), and behavioral signals, and it can issue a JavaScript challenge that a simple HTTP client can't solve.
A basic script that just sends an HTTP request and reads the HTML response never executes JavaScript, never solves the challenge, and typically originates from an easily-flagged datacenter IP, Cloudflare blocks that combination almost immediately.
Two things matter most: rendering the page in a real (or realistically-simulated) browser environment so JavaScript challenges resolve correctly, and routing the request through a residential IP address rather than a datacenter range that's already known to anti-bot systems. Combined, these address the two main signals Cloudflare checks.
Cloudflare is one of 6 anti-bot systems this API bypasses automatically, alongside DataDome, Akamai Bot Manager, Imperva Incapsula, PerimeterX, and Kasada, included on every plan with no extra per-request charge for the bypass itself.
Read the detailed guide: How to Bypass Cloudflare Anti-Bot Protection (2026) →