challenge SKILL.md skillC

challenge from alirezarezvani/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add alirezarezvani/claude-skills/challenge@git:20260309.8902ba7

Pins git:20260309.8902ba7 in mdr.lock. Pin the fingerprint instead.

Audit grade
C, 13 of 17 checks passed
Kind
SKILL.md skill
Repository
alirezarezvani/claude-skills
Path
.gemini/skills/challenge/SKILL.md
Versions recorded
1
Latest version
git:20260309.8902ba7, committed Mar 9, 2026
Size
67 bytes
Repository stars
29,054
License
MIT

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

../../../c-level-advisor/executive-mentor/skills/challenge/SKILL.md

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add alirezarezvani/claude-skills/challenge@sha256:d56303f02a82e80b

The line at the top of this page pins the label git:20260309.8902ba7, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4xzec25xyxuwreo2.svg)](https://markdownregistry.com/a/art_4xzec25xyxuwreo2)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Mar 9, 2026.

versioncommittedcommitsizeaudit
git:20260309.8902ba7 latest2026-03-09 8902ba7 67 BC view

Audit of the latest version

C  13 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: Frontmatter block present
  • fail: Frontmatter declares a name
  • fail: Frontmatter declares a description
  • fail: Size between 200 bytes and 200 KB (67 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

alirezarezvani/claude-skills · 29,054 stars · license MIT · pushed 2026-10-31 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4xzec25xyxuwreo2
GET https://markdownregistry.com/api/v1/resolve?ref=alirezarezvani/claude-skills/challenge
GET https://markdownregistry.com/api/v1/blob/d56303f02a82e80b53a6814bcf8f03d56a8bbd853b1d76ab2aec5520f607790b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in alirezarezvani/claude-skills

Other files named challenge

challenge SKILL.md skill
alirezarezvani/claude-skills · c-level-advisor/executive-mentor/skills/challenge/SKILL.md · Use before committing serious resources to a plan, or when feedback has been suspiciously positive. Runs a pre-mortem…
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challenge SKILL.md skill
pedrohcgs/claude-code-my-workflow · .claude/skills/challenge/SKILL.md · Stress-test a finding against the choices you did not make. Enumerates the discrete forks a competent analyst could…
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challenge SKILL.md skill
oliver-kriska/claude-elixir-phoenix · plugins/elixir-phoenix/skills/challenge/SKILL.md · Challenge mode reviews - rigorous questioning before approving changes. Use when you want thorough scrutiny of Ecto…
git:20260929.c08ad14 · audit A · 572 stars
challenge SKILL.md skill
athola/claude-night-market · plugins/gauntlet/skills/challenge/SKILL.md · Presents adaptive codebase challenge questions with multiple-choice and trace exercises. Use when testing contributor…
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challenge SKILL.md skill
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challenge SKILL.md skill
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