Individual skill
har-derived-api-client
Record a site's XHR into a HAR, derive an HTTP client.
optional-skills/web-development/har-derived-api-client/SKILL.md
Source commit e8639fd4312e5102d6f10c76b56406cb01c19092
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 2, 2026
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- Repository stars (not skill ratings)
- 261,468
- Repository last updated
- Nov 7, 2026
- License
- MIT
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SKILL.mdcore · 10,424 bytesSKILL.mdcore · 10,424 bytesSKILL.mdcore · 10,424 bytesSKILL.mdcore · 10,424 bytesscripts/har_capture.pyruns · 2,516 bytesscripts/har_capture_cdp.pyruns · 4,696 bytesscripts/har_to_client.pyruns · 5,852 bytes
Read excerpt
# HAR-Derived API Client
Drive a website once with a real browser while recording its network traffic
to a HAR file, then distill that HAR into the site's private JSON API so you
can call it directly with plain HTTP — far cheaper and faster than
browser-controlling the page on every request. Credit: trick by Jared Longster,
popularized by Dax (thdxr). This captures and replays; it does NOT bypass
auth, solve CAPTCHAs, or defeat bot-detection — if the site needs a logged-in
session, you carry its headers/cookies forward, you don't forge them.
The scripts are stdlib-plus-Playwright: capture needs Playwright, derivation
is pure stdlib, replay needs only `requests`/`httpx` (or `curl`).
Covers **every Hermes browser pathway**: the default local Chromium that