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reverse-engineer-anything

reverse-engineer-anything is a skill for Claude Code, Codex from arhen/agents. It costs 63 tokens per session (5,071 once invoked), scanned A, original, no licence file.

A reverse-engineering workflow for examining native programs, managed software, Electron and JavaScript apps, packaged programs, firmware, and browser targets. It uses shipped files or observed runtime evidence to explain behaviour, compare versions, decompile code, or guide a reconstruction.

In plain words
What is it for?
Use it to study released binaries, firmware, packaged apps, or browser targets and to support compatibility work or reconstruction.
Why use it?
It helps investigate software when the original implementation is unavailable or when behaviour must be explained from a delivered program. It is not intended for ordinary analysis of a source repository's architecture.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 13repo +1 yesterday A scan 63 tokens no licence

Good fit Use it to study released binaries, firmware, packaged apps, or browser targets and to support compatibility work or reconstruction.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/arhen/agents/reverse-engineer-anything
View source ↗ arhen/agents
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 arhen/agents --skill reverse-engineer-anything
Clone the repo
git clone --depth 1 https://github.com/arhen/agents

Made for: Claude Code, Codex.

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 reverse-engineer-anything

README.md
[![agentmods](https://agentmods.dev/badge/skills/arhen/agents/reverse-engineer-anything/github.svg)](https://agentmods.dev/skills/arhen/agents/reverse-engineer-anything)
Your own site
<a href="https://agentmods.dev/skills/arhen/agents/reverse-engineer-anything"><img src="https://agentmods.dev/badge/skills/arhen/agents/reverse-engineer-anything/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 reverse-engineer-anything

Your own site · 80×15
<a href="https://agentmods.dev/skills/arhen/agents/reverse-engineer-anything"><img src="https://agentmods.dev/badge/skills/arhen/agents/reverse-engineer-anything.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,071 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 $0.00063 $0.05071
Opus 5.5 $0.00025 $0.02028
Sonnet 5.5 $0.00013 $0.01014
Haiku 4.5 $0.00006 $0.00507

Measured 9d ago against content hash fbcd39d6abe8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reverse-engineer-anything 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 9d ago.

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.

skills/reverse-engineer-anything/SKILL.md · 357 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

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 357 lines · 63 tokens per session scan A fbcd39d6abe8

Subscribe to this mod's changes

reverse-engineer-anything is a skill published in the GitHub repository arhen/agents (13 stars, last pushed yesterday), with no licence file. It adds 63 tokens to every session and 5,071 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-10-29.

Debugging
Related

reverse-engineer-anything compared with skills from other repositories

reverse-engineer-anything next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
reverse-engineer-anythingarhen/agentsSkill13yesterdaynoneA63Claude Code, Codex
systematic-debuggingopen-metadata/OpenMetadataSkill16ktodayApache-2.0A37Claude Code
log-error-digestzebbern/claude-code-guideSkill4.7ktodayMITA71Claude Code, Codex
cwv-optimizeradobe/skillsSkill319todayApache-2.0A112Claude Code
ci-fixersipyourdrink-ltd/bernsteinSkill1.2ktodayApache-2.0A15Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skillsSkill2.0k24d agoMITA36Claude Code
diagnosing-missing-recordingsPostHog/posthogSkill41ktodaynoneA76Claude Code, Codex