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claude:challenge

claude:challenge is a skill for Claude Code from atournayre/claude-marketplace. It costs 22 tokens per session (854 once invoked), scanned A, original, MIT.

A French-language skill that evaluates an agent’s previous answer and suggests a better version.

In plain words
What is it for?
Scoring a previous response, identifying missing or weak parts, and proposing concrete improvements.
Why use it?
It provides a structured check for whether the answer was relevant, clear, complete, accurate, and properly formatted.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Part of the claude plugin — 7 skills shipped together

not rated 9repo 8mo ago A scan 22 tokens original MIT

Good fit Scoring a previous response, identifying missing or weak parts, and proposing concrete improvements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/atournayre/claude-marketplace/challenge
View source ↗ atournayre/claude-marketplace atournayre.github.io
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 atournayre/claude-marketplace --skill challenge
Clone the repo
git clone --depth 1 https://github.com/atournayre/claude-marketplace

Made for: Claude Code.

Or install claude, the plugin that ships this one along with the rest of its 7 skills.

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 claude:challenge

README.md
[![agentmods](https://agentmods.dev/badge/skills/atournayre/claude-marketplace/challenge/github.svg)](https://agentmods.dev/skills/atournayre/claude-marketplace/challenge)
Your own site
<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/challenge"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/challenge/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 claude:challenge

Your own site · 80×15
<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/challenge"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/challenge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 854 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 $0.00022 $0.00854
Opus 5.5 $0.00009 $0.00342
Sonnet 5.5 $0.00004 $0.00171
Haiku 4.5 $0.00002 $0.00085

Measured 2mo ago against content hash 10304a7a731b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude:challenge 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.

claude/skills/challenge/SKILL.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Challenge - Auto-évaluation des réponses Claude

Instructions à Exécuter

IMPORTANT : Exécute ce workflow étape par étape :

Analyse critique de ma dernière réponse fournie et proposition d'une version améliorée.

Purpose

Permettre à Claude d'évaluer objectivement la qualité de sa dernière réponse et d'identifier les axes d'amélioration concrets.

Variables

  • LAST_RESPONSE: Ma dernière réponse dans la conversation
  • ORIGINAL_QUESTION: La question ou demande initiale de l'utilisateur
  • EVALUATION_CRITERIA: Critères d'évaluation (clarté, pertinence, complétude, précision, format)

Relevant Files

  • Historique de conversation (contexte automatique)

Workflow

1. Identification du contexte

  • Identifie la dernière question/demande de l'utilisateur
  • Récupère ma dernière réponse complète
  • Note les objectifs explicites et implicites de la demande

2. Évaluation structurée

Évalue ma réponse selon ces critères (note /10 pour chaque) :

Pertinence (/10)

  • La réponse répond-elle directement à la question ?
  • Y a-t-il des éléments hors sujet ou manquants ?

Clarté (/10)

  • Le message est-il facile à comprendre ?
  • Le format est-il adapté (listes vs paragraphes) ?
  • Les termes techniques sont-ils expliqués si nécessaire ?

Complétude (/10)

  • Tous les aspects de la demande sont-ils couverts ?
  • Y a-t-il des informations importantes omises ?

Précision (/10)

  • Les informations sont-elles exactes ?
  • Y a-t-il des approximations ou suppositions ?

Format et style (/10)

  • Le ton est-il approprié (casual, pas trop formel) ?
  • Le format respecte-t-il les préférences (listes à puces) ?
  • Y a-t-il des phrases trop enthousiastes à éviter ?

3. Calcul de la note globale

  • Note finale = moyenne des 5 critères
  • Identification du critère le plus faible
  • Identification des points forts

4. Proposition d'amélioration

  • Liste concrète de ce qui pourrait être amélioré
  • Proposition d'une version améliorée si la note < 8/10
  • Focus sur les critères les plus faibles

Read the full file on GitHub · 113 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. 2mo ago First seen · 113 lines · 22 tokens per session scan A 10304a7a731b

Subscribe to this mod's changes

claude:challenge is a skill published in the GitHub repository atournayre/claude-marketplace (9 stars, last pushed 8mo ago), licensed MIT. It adds 22 tokens to every session and 854 once invoked, about $0.0001 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 2026-08-31.

Writing and docs
Related

claude:challenge compared with skills from other repositories

claude:challenge next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
claude:challengeatournayre/claude-marketplaceSkill98mo agoMITA22Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill100ktodayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k3d agoMITA200Claude Code, Codex
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill315k6d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code