UAIntel Tool Scores User-Agent Risk Using Pattern Matching, Threat Feeds, and Community Input

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A developer has built UAIntel, a free tool that assigns risk scores to HTTP User-Agent strings to help identify bots, scrapers, and malicious traffic. The first layer uses rule-based pattern matching to flag impossible OS-browser combinations, version inconsistencies, and known automation frameworks like Selenium and Puppeteer. A second layer cross-references User-Agents against bundled threat intelligence feeds, including bad-bot blocklists and malware UA databases, which are refreshed weekly via Cloudflare Workers. A third layer incorporates community voting to handle ambiguous cases that the first two layers cannot confidently classify. The tool is available at uaintel.tech at no cost and requires no account registration.

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