review

review is a skill for Claude Code from anton-abyzov/specweave. It costs 43 tokens per session (1,089 once invoked), scanned A, original, MIT.

An independent, adversarial check of an increment's specification, code changes, and surrounding code. Every reported problem must point to the exact file and line and be checked again.

In plain words
What is it for?
Use it to review correctness, security, and compliance with the specification, with either one review pass or three focused review lenses.
Why use it?
It catches concrete failures that the person who wrote the code may overlook before the change reaches users.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions subagents; mentions Claude Code.

Part of the sw plugin — 10 skills, 1 agent, 4 hooks shipped together

Good fit Use it to review correctness, security, and compliance with the specification, with either one review pass or three focused review lenses.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/anton-abyzov/specweave/review
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 anton-abyzov/specweave --skill review
Clone the repo
git clone --depth 1 https://github.com/anton-abyzov/specweave

Made for: Claude Code.

Or install sw, the plugin that ships this one along with the rest of its 10 skills, 1 agent, 4 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 review

README.md
[![agentmods](https://agentmods.dev/badge/skills/anton-abyzov/specweave/review/github.svg)](https://agentmods.dev/skills/anton-abyzov/specweave/review)
Your own site
<a href="https://agentmods.dev/skills/anton-abyzov/specweave/review"><img src="https://agentmods.dev/badge/skills/anton-abyzov/specweave/review/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 review

Your own site · 80×15
<a href="https://agentmods.dev/skills/anton-abyzov/specweave/review"><img src="https://agentmods.dev/badge/skills/anton-abyzov/specweave/review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,089 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00043 $0.01089
Opus 5 $0.00022 $0.00544
Sonnet 5 $0.00009 $0.00218
Haiku 4.5 $0.00004 $0.00109

Measured 5d ago against content hash 1ac414215b46, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

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 5d 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.

plugins/specweave/skills/review/SKILL.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Increment

One review surface (it replaces the old grill / code-reviewer / judge-llm passes). Reads the increment's spec, its diff and the code around it, then reports what is actually wrong — with path:line for every claim. Writes reports/review.md + reports/review.json under the increment. specweave complete prints a notice when review.md is absent but never blocks.

Usage

sw:review <increment-id>            # single adversarial pass
sw:review <increment-id> --full     # 3 parallel lenses: correctness, security, spec-compliance

Rules

  1. Fresh context. The session that wrote the code never approves it. Run the pass through a subagent (Claude Code: Task({ subagent_type: "general-purpose", … })) or a new session in any other tool. If you wrote this code in this context and cannot spawn one, say so in the report instead of claiming an independent review.
  2. Every finding cites path:line and states a concrete failure: inputs or state → wrong output, crash, data loss, or leak. No "consider refactoring", no style opinions.
  3. Re-verify before reporting. Re-open the cited lines — and run the test that would fail — and drop anything that does not survive. A wrong finding costs more than a missed one. Unverifiable but plausible findings are reported as plausible, not as fact.
  4. Severity: critical / high / medium / low. Only critical and high are blocking.
  5. Nit cap 5. At most five low findings; if there are more, report the five worst and one line saying how many were dropped.
  6. Scope is the increment's diff, not the repository: git diff $(git merge-base HEAD <base>)...HEAD -- <the tasks' Files>.

Steps

  1. Scope: read spec.md (ACs + Approach) and the Files: fields in tasks.md. Collect the diff for those files plus the code they call.
  2. Pass — in this order:
    • correctness: wrong logic, unhandled error paths, races, off-by-one, resource leaks;
    • security: injection, path traversal, secret leakage, missing authz, unsafe spawn/exec;
    • spec-compliance: ACs marked done but not implemented, tests that assert nothing, behaviour that contradicts spec.md. With --full, run those three as parallel subagents and merge their findings (dedupe by file:line + summary).
  3. Verify each candidate finding as per rule 3.
  4. Report: write both files (shapes below).
  5. Hand back: fix critical/high findings yourself or hand them to sw:do, then re-run specweave verify <id> and close with sw:done.

Read the full file on GitHub · 103 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. 5d ago First seen · 103 lines · 43 tokens per session scan A 1ac414215b46

Subscribe to this mod's changes

review is a skill published in the GitHub repository anton-abyzov/specweave (160 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 1,089 once invoked, about $0.0002 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 2026-09-03.

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