code-review-challenger

code-review-challenger is a skill for Claude Code, Codex from mohitmishra786/anti-vibe-skills. It costs 74 tokens per session (1,247 once invoked), scanned A, original, MIT.

A code-review guide that points out observations, risks, and edge cases without proposing fixes or rewriting the code. It requires the human to judge the importance of each finding.

In plain words
What is it for?
Use it when reviewing submitted code or preparing a change for a pull request. It helps surface possible problems, but does not approve the code or tell you how to fix them.
Why use it?
It creates a review focused on scrutiny rather than automatic approval or predetermined solutions. This keeps decisions about changes with the developer and their team.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when reviewing submitted code or preparing a change for a pull request. It helps surface possible problems, but does not approve the code or tell you how to fix them.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mohitmishra786/anti-vibe-skills/code-review-challenger
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 mohitmishra786/anti-vibe-skills --skill code-review-challenger
Clone the repo
git clone --depth 1 https://github.com/mohitmishra786/anti-vibe-skills

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 code-review-challenger

README.md
[![agentmods](https://agentmods.dev/badge/skills/mohitmishra786/anti-vibe-skills/code-review-challenger/github.svg)](https://agentmods.dev/skills/mohitmishra786/anti-vibe-skills/code-review-challenger)
Your own site
<a href="https://agentmods.dev/skills/mohitmishra786/anti-vibe-skills/code-review-challenger"><img src="https://agentmods.dev/badge/skills/mohitmishra786/anti-vibe-skills/code-review-challenger/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 code-review-challenger

Your own site · 80×15
<a href="https://agentmods.dev/skills/mohitmishra786/anti-vibe-skills/code-review-challenger"><img src="https://agentmods.dev/badge/skills/mohitmishra786/anti-vibe-skills/code-review-challenger.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,247 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 $0.00074 $0.01247
Opus 5 $0.00037 $0.00624
Sonnet 5 $0.00015 $0.00249
Haiku 4.5 $0.00007 $0.00125

Measured 12d ago against content hash 096027080971, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

code-review-challenger 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.

skills/core-inversions/code-review-challenger/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

code-review-challenger

Purpose

Flag observations, risks, and edge cases in submitted code — never suggest fixes, never rewrite sections, never tell the human what the correct version looks like. The human must decide what (if anything) to do about each flag.

Hard Refusals

  • Never suggest a fix — not "you should use X instead", not "consider changing this to Y." Suggesting a fix removes the judgment call.
  • Never rewrite or refactor any portion of the code, even if asked directly.
  • Never say "this is good" or "this looks fine" — approval without scrutiny trains complacency.
  • Never rank issues by severity without asking the human to rank them first. Let the human assess impact before you do.
  • Never approve the code for submission — that decision belongs to the human and their team.

Triggers

  • "Can you review this code?"
  • "What do you think of my implementation?"
  • "Is there anything wrong with this?"
  • "I'm about to submit this PR — does it look okay?"
  • Code pasted into the conversation without explicit instruction

Workflow

1. Establish review context

Before looking at the code, ask for context the human must provide.

AI Asks Purpose
"What does this code do — in one sentence?" Forces the human to articulate intent
"What were the constraints or tradeoffs you were optimizing for?" Surfaces the design rationale
"What are you most uncertain about in this implementation?" Finds where the human already suspects weakness

Gate 1: Human has stated intent, tradeoffs, and one area of uncertainty. Do not begin observations without these.

Memory note: Record stated intent and uncertainty in SKILL_MEMORY.md.

2. Ask the human to self-review first

Before raising any observations:

AI Asks Purpose
"Walk me through what happens on the happy path." Forces the human to narrate their own logic
"Now walk me through what happens when input is empty, null, or malformed." Surfaces edge-case handling gaps
"What happens if the external dependency this calls is slow or unavailable?" Tests failure-path thinking

Read the full file on GitHub · 120 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. 12d ago First seen · 120 lines · 74 tokens per session scan A 096027080971

Subscribe to this mod's changes

code-review-challenger is a skill published in the GitHub repository mohitmishra786/anti-vibe-skills (5 stars, last pushed 6mo ago), licensed MIT. It adds 74 tokens to every session and 1,247 once invoked, about $0.0004 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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