mandatoryprogrammer/thermoptic

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1045 stars · 67 forks observed · 2026-08-28

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

Thermoptic is a stealth HTTP proxy that routes requests from any HTTP client (like curl) through a containerized Chrome instance so the traffic is indistinguishable from a real Chrome browser at every layer, including JA4+ TLS and HTTP fingerprints. It also offers hooks to mitigate JavaScript-based fingerprinting and supports hybrid scraping that mixes browser sessions with low-level HTTP clients.

Use cases

• scrape sites that block curl via JA4+ or Cloudflare fingerprinting
• make curl requests look like real Chrome traffic
• continue a browser session with a low-level HTTP client without detection
• bypass TLS and HTTP client fingerprinting blocks
• avoid JavaScript-based bot fingerprinting while scraping
• run hybrid browser and HTTP-client scraping pipelines

When to choose

• you need your HTTP client traffic to match a real Chrome fingerprint exactly
• anti-bot services like Cloudflare block your scraper based on JA4+ fingerprints
• you want to switch between a real browser and curl within one session without being flagged

When to avoid

• you need a general-purpose proxy unrelated to fingerprint evasion
• your target blocks you by IP reputation rather than client fingerprinting
• you cannot run a containerized Chrome instance or lack the resources for it

Facets

service · maturity active

proxy http-client web-scraping security web-development security crawlers privacy self-hosted http-proxy fingerprint-spoofing ja4 anti-bot-bypass chrome-cloaking tls-fingerprint scraping docker linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mandatoryprogrammer/thermoptic")