Danny-Dasilva/CycleTLS

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1518 stars · 218 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

CycleTLS is a Go library with a JavaScript/TypeScript wrapper that lets clients spoof TLS/JA3 (and JA4) fingerprints when making HTTP requests, helping bypass TLS-fingerprint-based bot detection. It supports custom header ordering, proxies, HTTP/2 and HTTP/3 (QUIC), WebSockets, and SSE.

Use cases

• scrape sites that block requests by TLS fingerprint
• spoof JA3 fingerprint in Go
• make HTTP requests with a browser-like TLS handshake from Node.js
• bypass Cloudflare JA3 fingerprinting
• send requests through a proxy with custom TLS fingerprint
• test how a server responds to different client fingerprints

When to choose

• you need to emulate browser TLS fingerprints (JA3/JA4) in Go or JavaScript
• you're scraping or testing endpoints that fingerprint TLS clients
• you need custom header ordering, HTTP/2/3, or proxy support alongside fingerprint spoofing

When to avoid

• you just need a standard HTTP client without fingerprint spoofing
• you need a general-purpose scraping framework with parsing and rendering
• your project disallows GPL-3.0 licensed dependencies

Facets

library · maturity active

http-client security networking security web-development crawlers developer-tools go cross-platform ja3-fingerprint tls-spoofing anti-bot-bypass http2 http3 quic websocket proxy-support typescript web-scraping nodejs

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