review-spec

review-spec is a skill for Claude Code, Codex from WolframResearch/AgentTools. It costs 92 tokens per session (995 once invoked), scanned A, original, MIT.

A review process that compares a design specification with the existing codebase before implementation. A design specification is a document describing what a planned software change should do and where it should fit.

In plain words
What is it for?
Use it to validate a specification's claims about current code, inspect referenced files, and identify unclear or missing implementation details.
Why use it?
It catches incorrect file paths, options, function details, assumptions, missing work, and conflicts with project conventions before they cause rework.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/wolframresearch/agenttools/review-spec
Any agent
npx skills add WolframResearch/AgentTools --skill review-spec
Clone the repo
git clone --depth 1 https://github.com/WolframResearch/AgentTools

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 review-spec

README.md
[![agentmods](https://agentmods.dev/badge/skills/wolframresearch/agenttools/review-spec.svg)](https://agentmods.dev/skills/wolframresearch/agenttools/review-spec)
Your own site
<a href="https://agentmods.dev/skills/wolframresearch/agenttools/review-spec"><img src="https://agentmods.dev/badge/skills/wolframresearch/agenttools/review-spec.svg" alt="Measured on agentmods" height="20"></a>
Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 995 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00092 $0.00995
Opus 5 $0.00046 $0.00498
Sonnet 5 $0.00018 $0.00199
Haiku 4.5 $0.00009 $0.00100

Measured 3d ago against content hash c678ead8d9c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

review-spec 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 3d 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/review-spec/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review a Design Specification

Review a design specification against the actual codebase to surface inaccuracies, missing details, convention violations, and potential issues — before implementation begins. The goal is to catch problems that would cause confusion or rework during implementation.

Spec to review: $ARGUMENTS

If no specific spec is given, ask the user which spec in Specs/ they'd like reviewed.

Process

1. Read the Spec

Read the full spec file. As you read, collect:

  • Referenced files: Every source file mentioned (implementation touchpoints, code examples, "see also" references)
  • Factual claims: Specific assertions about existing code (option names/defaults, function signatures, symbol locations, data structures, file paths)
  • New additions: Symbols, options, files, or behaviors the spec proposes to add
  • Behavioral descriptions: How existing functions work, what they accept, what they return

2. Cross-Reference with the Codebase

Read all referenced files in parallel using the Explore agent or direct reads. For each file, verify:

  • Options and signatures: Do the current options match what the spec claims? Are default values correct? Does the spec list all required changes?
  • Symbol locations: Are symbols declared where the spec says they should be (e.g., CommonSymbols.wl vs private context)? Follow existing conventions — if similar symbols are private in other files, new ones should be too.
  • Function behavior: Does the code actually work the way the spec describes? Look at the actual implementation, not just the signature.
  • Naming and conventions: Do proposed names follow codebase conventions (lowerCamelCase for internal functions, UpperCamelCase for exported, etc.)?
  • Implementation touchpoints completeness: Are there files that would need changes but aren't listed? For example, if a new path variable is added, does it need a declaration in CommonSymbols.wl AND a definition in Files.wl?

Read the full file on GitHub · 90 lines

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. 3d ago First seen · 90 lines · 92 tokens per session scan A c678ead8d9c9

Subscribe to this mod's changes

review-spec is a skill published in the GitHub repository WolframResearch/AgentTools (84 stars, last pushed yesterday), licensed MIT. It adds 92 tokens to every session and 995 once invoked, about $0.0005 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens