reverse

reverse is a skill for Claude Code from AsiaOstrich/universal-dev-standards. It costs 161 tokens per session (2,160 once invoked), scanned A, original, no licence file.

A reverse-engineering assistant for examining existing software and understanding how it works. The description mentions three analysis dimensions, subcommands, and a full-analysis mode.

In plain words
What is it for?
Use it for broad or dimension-specific analysis of an existing codebase.
Why use it?
It can provide a defined way to study unfamiliar code when its design or behavior is not already clear.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Part of the universal-dev-standards plugin — 56 skills, 50 commands, 10 agents, 1 hook, 1 plugin shipped together

Good fit Use it for broad or dimension-specific analysis of an existing codebase.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/asiaostrich/universal-dev-standards/reverse-engineer
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 AsiaOstrich/universal-dev-standards --skill reverse-engineer
Clone the repo
git clone --depth 1 https://github.com/AsiaOstrich/universal-dev-standards

Made for: Claude Code.

Or install universal-dev-standards, the plugin that ships this one along with the rest of its 56 skills, 50 commands, 10 agents, 1 hook, 1 plugin.

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

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/asiaostrich/universal-dev-standards/reverse-engineer"><img src="https://agentmods.dev/badge/skills/asiaostrich/universal-dev-standards/reverse-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 161 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,160 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 $0.00161 $0.02160
Opus 5.5 $0.00064 $0.00864
Sonnet 5.5 $0.00032 $0.00432
Haiku 4.5 $0.00016 $0.00216

Measured 1mo ago against content hash 5f9f46cf9ea6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reverse 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 1mo 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.

.agents/skills/reverse-engineer/SKILL.md · 141 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

4 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. 1mo ago Changed · +3 lines 5f9f46cf9ea6
  2. 1mo ago First seen · 138 lines · 161 tokens per session scan A 2290784fee77

Subscribe to this mod's changes

reverse is a skill published in the GitHub repository AsiaOstrich/universal-dev-standards (79 stars, last pushed yesterday), with no licence file. It adds 161 tokens to every session and 2,160 once invoked, about $0.0006 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 2026-08-30.