js-ast-deobfuscation

js-ast-deobfuscation is a skill for Claude Code, Codex from zhizhuodemao/ai-reverse-resources. It costs 166 tokens per session (2,507 once invoked), scanned A, original, no licence file.

An evidence-based workflow for making obfuscated JavaScript easier to read. Obfuscated code is deliberately rearranged or disguised to hide its purpose.

In plain words
What is it for?
It is for recovering strings or names, identifying obfuscation patterns and bundler code, examining dynamic payloads, and preparing JavaScript for algorithm or virtual-machine analysis.
Why use it?
It preserves the original code and helps choose between static inspection, controlled execution, dynamic tracing, or stopping when the evidence is insufficient.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the js-reverse-plugin plugin — 3 skills shipped together

Good fit It is for recovering strings or names, identifying obfuscation patterns and bundler code, examining dynamic payloads, and preparing JavaScript for algorithm or virtual-machine analysis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add zhizhuodemao/ai-reverse-resources --skill js-ast-deobfuscation
Clone the repo
git clone --depth 1 https://github.com/zhizhuodemao/ai-reverse-resources

Made for: Claude Code, Codex.

Or install js-reverse-plugin, the plugin that ships this one along with the rest of its 3 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for js-ast-deobfuscation

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation/github.svg)](https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation)
Your own site
<a href="https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation"><img src="https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for js-ast-deobfuscation

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation"><img src="https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/js-ast-deobfuscation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 166 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,507 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00166 $0.02507
Opus 5 $0.00083 $0.01254
Sonnet 5 $0.00033 $0.00501
Haiku 4.5 $0.00017 $0.00251

Measured 11d ago against content hash bcc9e55c0859, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

js-ast-deobfuscation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/prepare-source.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/js-reverse-plugin/skills/js-ast-deobfuscation/SKILL.md · 141 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 141 lines · 166 tokens per session scan A bcc9e55c0859

Subscribe to this mod's changes

js-ast-deobfuscation is a skill published in the GitHub repository zhizhuodemao/ai-reverse-resources (8 stars, last pushed 28d ago), with no licence file. It adds 166 tokens to every session and 2,507 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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