is-antibot is a tool designed to detect antibot and CAPTCHA protection mechanisms from over 30 different providers by analyzing HTTP responses. js scrapers and data pipelines.
The tool works by performing static analysis of HTTP responses, examining elements such as headers, cookies, HTML fingerprints, response URLs, and status codes that are specific to various antibot and CAPTCHA providers. eu, and QCloud Captcha. By inspecting five key signals—headers, cookies, HTML, URL, and status code—the tool classifies the type of bot protection challenge encountered.
js package that can be installed via npm. It is designed to work seamlessly with popular HTTP libraries such as fetch, got, axios, undici, and node-fetch, as well as with raw HTTP responses. The tool requires no configuration, allowing developers to pass any HTTP response containing headers, HTML, URL, and status code for analysis.
This solution is aimed at developers who need to automate web scraping or maintain data pipelines that may encounter various antibot and CAPTCHA protections. It provides a way for these users to programmatically detect and react to bot protection challenges based on the provider and the reason for blocking.
is-antibot sits in PulseGate's Other dev tools category. Difficulty identifying and bypassing antibot and CAPTCHA protections in automated workflows. is-antibot is an open-source project aimed at developers building web automation or scraping tools. The project is open source (MIT). It runs on the web, the command line, and API, and it can be self-hosted.
Behind is-antibot is MicrolinkHQ, and the product first shipped in 2025. The project is developed in the open on GitHub with 37 stars and 76 commits in the last 90 days. Among its 5 catalogued features are antibot detection, provider coverage, and CAPTCHA detection.
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