agents-reverse-engineer: Skill for Claude Code

.claude/skills/are-specify/SKILL.md

are-specify is a skill for Claude Code from GeoloeG-IsT/agents-reverse-engineer. It costs 15 tokens per session (448 once invoked), scanned A, original, MIT.

An experimental tool that creates a project specification from AGENTS.md files, which are instruction documents used to describe how coding agents should work in a project.

In plain words
What is it for?
Use it to collect AGENTS.md files, synthesize their contents, and write a project specification while monitoring the background process.
Why use it?
It turns scattered agent instructions into a consolidated project description, although the input only says that it does not complete when no suitable files are found.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: mentions AGENTS.md.

This is GeoloeG-IsT/agents-reverse-engineer's own configuration. It tells Claude Code how to work on agents-reverse-engineer itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agents-reverse-engineer configures →

Reuse

Borrowing it

Nothing to install: this file belongs to GeoloeG-IsT/agents-reverse-engineer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/GeoloeG-IsT/agents-reverse-engineer/main/.claude/skills/are-specify/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/GeoloeG-IsT/agents-reverse-engineer

Made for: Claude Code.

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 are-specify

README.md
[![agentmods](https://agentmods.dev/badge/skills/geoloeg-ist/agents-reverse-engineer/are-specify.svg)](https://agentmods.dev/skills/geoloeg-ist/agents-reverse-engineer/are-specify)
Your own site
<a href="https://agentmods.dev/skills/geoloeg-ist/agents-reverse-engineer/are-specify"><img src="https://agentmods.dev/badge/skills/geoloeg-ist/agents-reverse-engineer/are-specify.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 448 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 original 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 $0.00015 $0.00448
Opus 5 $0.00008 $0.00224
Sonnet 5 $0.00003 $0.00090
Haiku 4.5 $0.00002 $0.00045

Measured 8d ago against content hash fc04e7bc68db, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

are-specify 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 8d 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.

.claude/skills/are-specify/SKILL.md · 44 lines

What it actually says

Generate a project specification from existing AGENTS.md documentation.

Steps

  1. Read version: Read .claude/ARE-VERSION → store as $VERSION. Show the user: agents-reverse-engineer v$VERSION

  2. Run the specify command in the background using run_in_background: true:

    npx agents-reverse-engineer@$VERSION specify --backend claude $ARGUMENTS
    
  3. Monitor progress by polling the latest progress log:

    • Wait ~15 seconds (use sleep 15 in Bash), then use Glob to find the latest .agents-reverse-engineer/progress-*.log file, and Read it (use the offset parameter to read only the last ~20 lines for long files)
    • Show the user a brief progress update
    • Check whether the background task has completed using TaskOutput with block: false
    • Repeat until the background task finishes
    • Important: Keep polling even if no progress log exists yet (the command takes a few seconds to start writing)
  4. On completion, read the full background task output and summarize:

    • Number of AGENTS.md files collected
    • Output file(s) written

This collects all AGENTS.md files, synthesizes them via AI, and writes a comprehensive project specification.

If no AGENTS.md files exist, it will auto-run generate first.

Options:

  • --dry-run: Show input statistics without making AI calls
  • --output <path>: Custom output path (default: specs/SPEC.md)
  • --multi-file: Split specification into multiple files
  • --force: Overwrite existing specification
  • --debug: Show AI prompts and backend details
  • --trace: Enable concurrency tracing to .agents-reverse-engineer/traces/
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. 8d ago First seen · 44 lines · 15 tokens per session scan A fc04e7bc68db

Subscribe to this mod's changes

are-specify is a skill published in the GitHub repository GeoloeG-IsT/agents-reverse-engineer (20 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 448 once invoked, about $0.0001 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 2026-08-30.