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Practice target. A fake marketplace built for scraping practice, no real businesses, people, or prices. View the matching lesson at Scraping Central / Learn.

Catalog108 / challenges / antibot/header-fingerprint

Header fingerprint check

intermediate Matching curriculum →

What this challenge teaches

Teaches: Many anti-bots compare HEADER ORDER + values against a known-good profile. Mismatches → block.

Expected output: Either spoof a full Chrome header set, OR use a fingerprint-aware HTTP client like curl-cffi.

Submit your scraper's JSON output to /challenges/antibot/header-fingerprint/grade (grader endpoint is part of a later phase; URL is reserved now).

Passed. Headers look browser-shaped.
Your User-Agent:     Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Your Accept-Encoding: gzip, br, zstd, deflate