A guide for checking whether implemented code matches its design documents. It also checks whether the documents and implementation are consistent and current.

Use it during development or after implementation to compare the code with feature designs and update inconsistencies.

It helps find missing work, differences from the plan, and documentation that no longer describes the code.

review-spec — Skill for Claude Code by serpro69/claude-toolbox

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 serpro69/claude-toolbox --skill review-spec

Clone the repo

git clone --depth 1 https://github.com/serpro69/claude-toolbox

Made for: Claude Code.

Or install kk, the plugin that ships this one along with the rest of its 18 skills, 6 agents, 2 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/serpro69/claude-toolbox/review-spec/github.svg)](https://agentmods.dev/skills/serpro69/claude-toolbox/review-spec)

Your own site

<a href="https://agentmods.dev/skills/serpro69/claude-toolbox/review-spec"><img src="https://agentmods.dev/badge/skills/serpro69/claude-toolbox/review-spec/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/serpro69/claude-toolbox/review-spec"><img src="https://agentmods.dev/badge/skills/serpro69/claude-toolbox/review-spec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,640 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.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.01640
Opus 5.5	$0.00018	$0.00656
Sonnet 5.5	$0.00009	$0.00328
Haiku 4.5	$0.00004	$0.00164

Measured 2mo ago against content hash 50b95cf5bd44, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2mo 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.

klaude-plugin/skills/review-spec/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementation Review

Conventions

Read capy knowledge base conventions at shared-capy-knowledge-protocol.md.
Read profile detection at shared-profile-detection.md for the shared detection procedure. When an active profile populates a review-spec/ phase slot, its index.md content is loaded before per-task verification begins.

Overview

Systematically compare implemented code against a feature's design.md, implementation.md, and tasks.md in /docs/feat/wip/[feature]/. Works both mid-implementation (reviewing completed tasks only) and post-implementation (full feature review).

Findings go in both directions — code that deviates from spec AND spec that is wrong or outdated given the code.

Required Outputs

Before declaring the review complete, verify all outputs are delivered:

Review report presented to user
User-confirmed intentional SPEC_DEV/EXTRA_IMPL findings indexed as kk:arch-decisions (skip if none confirmed)
Next steps confirmation from user

Indexing is owned by this skill — callers (e.g., /kk:implement) do NOT duplicate it.

Review Modes

Standard Mode (`/kk:review-spec`)

Reviews spec conformance in the main conversation context. Single-pass review using the workflow below.

Isolated Mode (`/kk:review-spec:isolated`)

Delegates detection to an independent spec-reviewer sub-agent that did not write the code, then annotates its findings with type-specific author context. Low-relevance types (MISSING_IMPL, DOC_INCON, OUTDATED_DOC, AMBIGUOUS) get brief annotations; high-relevance types (SPEC_DEV, EXTRA_IMPL) get detailed annotations with spec update suggestions.

Cost: Higher (sub-agent + annotation)
Isolation: True — reviewer has zero authorship bias or session context
Degradation: If sub-agent fails, suggests standard mode fallback
Best for: When extra rigor is worth the cost (post-implementation, pre-merge)

Read the full file on GitHub · 123 lines

Files

What ships with it

5 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.

2mo ago Changed 50b95cf5bd44
2mo ago First seen · 123 lines · 44 tokens per session scan A 71cd81ddea46

Subscribe to this mod's changes

review-spec is a skill published in the GitHub repository serpro69/claude-toolbox (155 stars, last pushed yesterday), licensed Apache-2.0. It adds 44 tokens to every session and 1,640 once invoked, about $0.0002 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.

Claude Code Code review Java Planning Writing and docs claude claude-config claude-skills go

review-spec next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
review-specserpro69/claude-toolbox	Skill	155	yesterday	Apache-2.0	A	44	Claude Code
814-regulations-iso-25010jabrena/plinth	Skill	462	2d ago	Apache-2.0	A	83	Claude Code, Codex
121-java-object-oriented-designjabrena/plinth	Skill	462	2d ago	Apache-2.0	A	107	Claude Code, Codex
059-design-atddjabrena/plinth	Skill	462	2d ago	Apache-2.0	A	93	Claude Code, Codex
056-design-avoid-breaking-changesjabrena/plinth	Skill	462	2d ago	Apache-2.0	A	106	Claude Code, Codex
707-technologies-hexagonal-architecturejabrena/plinth	Skill	462	2d ago	Apache-2.0	A	102	Claude Code, Codex
053-design-simple-rulesjabrena/plinth	Skill	462	2d ago	Apache-2.0	A	86	Claude Code, Codex