js-obfuscation SKILL.md skillA
js-obfuscation from sergeyizmailov/knowledge-delta-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sergeyizmailov/knowledge-delta-skills/js-obfuscation@git:20260929.c1f17bdPins git:20260929.c1f17bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sergeyizmailov/knowledge-delta-skills
- Path
skills/security/js-obfuscation/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260929.c1f17bd, committed Sep 29, 2026
- First version recorded
- Aug 11, 2026
- Size
- 3,891 bytes
- Repository stars
- 3
- License
- MIT
Use when obfuscating JavaScript, building anti-detection layers, evading Google Safe Browsing, hiding payloads from scanners, adding anti-bot/anti-DevTools protection, or preparing phishing/red-team pages for deployment.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# JS Obfuscation & Anti-Detection ## Architecture: Defense-in-Depth Layers ``` Request arrives ├─ L1: Server-side cloaking (IP/ASN/GeoIP) → anti-bot.md │ ├─ L2: CAPTCHA gate (Turnstile) → anti-bot.md │ │ ├─ L3: JS anti-bot (webdriver, fingerprint, behavior) → anti-bot.md │ │ │ ├─ L4: Encrypted payload (AES/XOR/Unicode) → encryption.md │ │ │ │ └─ L5: Obfuscated JS (javascript-obfuscator) → obfuscator-configs.md │ │ │ └─ L6: One-time URLs (single use, then 404) │ │ └─ Anti-DevTools → anti-devtools.md ``` Without L1 everything else just delays detection. With L1, site can live weeks. ## Quick Decision Guide | Scenario | Layers | |----------|----------------| | Quick red team page | L5 (balanced) + anti-DevTools | | Production phishing with longevity | All 6 | | Landing page (BitB popup) | L3 + L5 + anti-DevTools | | Cloudflare Worker | L1 (ASN via CF) + L4 + L5 | | Email attachment HTML | L4 (AES, key in URL fragment) + L5 (max) + anti-DevTools | ## Evasion Checklist (Safe Browsing / VirusTotal / PhishTank / CF WAF) 1. Server-side IP/ASN/GeoIP filter — crawlers never see payload …
Read the whole file at its exact version.
How to install
mdr add sergeyizmailov/knowledge-delta-skills/js-obfuscation@sha256:68dceee51e183289The line at the top of this page pins the label git:20260929.c1f17bd, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_v6gxcsmgau5yp3te)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 11, 2026 and Sep 29, 2026, about one every 50 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260929.c1f17bd latest | 2026-09-29 | c1f17bd | 3,891 B | A | view · diff |
| git:20260811.05d4e00 | 2026-08-11 | 05d4e00 | 4,511 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3891 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
sergeyizmailov/knowledge-delta-skills · 3 stars · license MIT · pushed 2026-10-14 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_v6gxcsmgau5yp3te GET https://markdownregistry.com/api/v1/resolve?ref=sergeyizmailov/knowledge-delta-skills/js-obfuscation GET https://markdownregistry.com/api/v1/blob/68dceee51e18328921523f086a0ef880a556d0f012c075a5fc1dfc16789cf764
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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