code-review

code-review is a skill for Claude Code, Codex from MichaelYcJo/SpecSeal. It costs 113 tokens per session (5,760 once invoked), scanned A, original, MIT.

A two-stage review method for code changes: first compare the code with the written requirements, then assess quality. It looks for both missing behavior and extra behavior that was not requested.

In plain words
What is it for?
Use it to review or re-review a pull request or diff for specification compliance, correctness, error handling, security, performance, and test quality.
Why use it?
It keeps reviewers from approving code without checking the specification first. It also encourages questions when evidence is insufficient instead of unsupported approval.

Skill for Claude CodeCodex

Part of the specseal plugin — 20 skills, 3 agents, 3 hooks shipped together

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/michaelycjo/specseal/code-review
Any agent
npx skills add MichaelYcJo/SpecSeal --skill code-review
Clone the repo
git clone --depth 1 https://github.com/MichaelYcJo/SpecSeal

Made for: Claude Code, Codex.

Or install specseal, the plugin that ships this one along with the rest of its 20 skills, 3 agents, 3 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.

agentmods badge for code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/michaelycjo/specseal/code-review.svg)](https://agentmods.dev/skills/michaelycjo/specseal/code-review)
Your own site
<a href="https://agentmods.dev/skills/michaelycjo/specseal/code-review"><img src="https://agentmods.dev/badge/skills/michaelycjo/specseal/code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 113 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,760 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 $0.00113 $0.05760
Opus 5 $0.00056 $0.02880
Sonnet 5 $0.00023 $0.01152
Haiku 4.5 $0.00011 $0.00576

Measured today against content hash bb0a619d2138, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-review 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 today.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/chain_check.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/code-review/SKILL.md · 436 lines

How it starts

The opening of the file, as written. The whole thing — 436 lines — stays where its author put it; the contents beside it link to each section on GitHub.

code-review — spec first, then quality

Loaded by the warden agent; also drives the orchestrator running a review. The default assumption is "this code has defects" — try to find them, not to prove their absence. An ungrounded LGTM is forbidden; when uncertain, write a question, not a pass.

The language the round records are written in

The prose in rounds/round-N.md — its cell contents and the text beneath its tables — follows Record language in config.md, English when the row is absent. The root is <repo>/seal/ where that directory exists and $(git rev-parse --git-common-dir)/seal/ otherwise.

What stays English regardless: every field name, section heading and vocabulary word the checkers match, listed in templates/config.md under What no row governs. chain_check.py reads those strings literally, so a translated ## Verdicts or Verdict column is not a translation — it is a record the checker cannot read.

The report you post to the pull request is not a record. It is prose for whoever opens that pull request, and follows Commit and pull request language instead, per commit-pr-convention. Posting and recording are separate acts producing different texts, which is why the two rows split here.

Two stages, in order

  1. Spec compliance — actual code vs. the written spec (docs/ policies first, then seal/specs/ SDD). Look for both missing and unrequested extra behavior. Do not trust the implementer's report; read the code.
  2. Quality — only after stage 1 passes: correctness, error handling, security, performance, test quality.

The SDD set includes the work item's overview.md, which arrives in the diff rather than needing a search — the change writes it. It is the implementer's account, so stage 1 governs it: read the code, never adopt what it concludes. Three sections carry that account. Where spec and implementation diverged declares where the code left the document; Not verified is the author's own list of claims nobody has checked; Fed back into the spec holds clauses the implementer added to the spec set during this change, which is why an account citing them is citing itself. Settle what you can and report each result; what only a person can answer stays open, and the report says which of the two happened. Reviewers do not edit the file.

Read the full file on GitHub · 436 lines

Files

What ships with it

1 file 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. today Changed · +227 lines bb0a619d2138
  2. 4d ago First seen · 209 lines · 113 tokens per session scan A 7526faaf0458

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository MichaelYcJo/SpecSeal (1 stars, last pushed today), licensed MIT. It adds 113 tokens to every session and 5,760 once invoked, about $0.0006 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 2026-08-31.

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