fierce-review

fierce-review is a command for Claude Code from seokan-jeong/team-shinchan. It costs 16 tokens per session (375 once invoked), scanned A, original, MIT.

A structured adversarial code-review workflow for examining changes across correctness, security, performance, code quality, tests, and design principles.

In plain words
What is it for?
Use it for pre-release changes, security-sensitive code, payment handlers, authentication boundaries, and data-loss paths.
Why use it?
It reduces the chance that a single review misses serious problems, especially in changes involving payments, authentication, security, or possible data loss.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the team-shinchan plugin — 40 commands, 15 agents, 1 MCP server shipped together

Good fit Use it for pre-release changes, security-sensitive code, payment handlers, authentication boundaries, and data-loss paths.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/seokan-jeong/team-shinchan/fierce-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.

Clone the repo
git clone --depth 1 https://github.com/seokan-jeong/team-shinchan

Made for: Claude Code.

Or install team-shinchan, the plugin that ships this one along with the rest of its 40 commands, 15 agents, 1 MCP server.

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 fierce-review

README.md
[![agentmods](https://agentmods.dev/badge/commands/seokan-jeong/team-shinchan/fierce-review/github.svg)](https://agentmods.dev/commands/seokan-jeong/team-shinchan/fierce-review)
Your own site
<a href="https://agentmods.dev/commands/seokan-jeong/team-shinchan/fierce-review"><img src="https://agentmods.dev/badge/commands/seokan-jeong/team-shinchan/fierce-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 fierce-review

Your own site · 80×15
<a href="https://agentmods.dev/commands/seokan-jeong/team-shinchan/fierce-review"><img src="https://agentmods.dev/badge/commands/seokan-jeong/team-shinchan/fierce-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 375 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 $0.00016 $0.00375
Opus 5 $0.00008 $0.00187
Sonnet 5 $0.00003 $0.00075
Haiku 4.5 $0.00002 $0.00038

Measured 12d ago against content hash 528ed6c6f37d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fierce-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 12d 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.

commands/fierce-review.md · 34 lines

What it actually says

Fierce Review Command

A main-loop Workflow runs a non-skippable, multi-dimension review: dimension agents (correctness, security, performance, quality, tests, principles) fan out independently, every finding is challenged by a skeptic, a completeness critic hunts the files and rules nobody examined, and an Action-Kamen judge scores against the shared rubric. Use when a single-pass review risks stopping at "good enough" — pre-release diffs, security/payment/auth boundaries, data-loss paths.

See skills/fierce-review/SKILL.md for the full procedure.

Usage

/team-shinchan:fierce-review [paths, a feature description, or nothing for the current diff]

Examples

/team-shinchan:fierce-review                       # review the working-tree / branch diff
/team-shinchan:fierce-review "src/auth/"           # review a path
/team-shinchan:fierce-review "the new payment webhook handler"

When to use this vs /team-shinchan:review

Use fierce-review Use review (Action Kamen)
High-stakes scope: pre-release, security/payment/auth boundary, data-loss path Routine change, single file, quick check
You want guaranteed per-dimension coverage + adversarial per-finding verification + a completeness critic A single thorough pass is acceptable
Explicit opt-in (runs a Workflow, higher token cost) Auto-triggered or delegated, cheap

An APPROVED fierce-review writes .shinchan-docs/reviews/REVIEW-{NNN}.json, which counts as code-review evidence for the verification-before-completion gate.

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. 12d ago First seen · 34 lines · 16 tokens per session scan A 528ed6c6f37d

Subscribe to this mod's changes

fierce-review is a command published in the GitHub repository seokan-jeong/team-shinchan (8 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 375 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 2026-08-31.