Claude Code Skills

by levnikolaevich 525 MIT Updated Jul 30, 2026
Testing Claude CodeCodex

Claude Code Skills is an open-source testing skill for Claude Code and Codex, published by levnikolaevich. Its author describes it as: “18 standalone skills for Claude Code and Codex: review, audit, optimization, testing, product discovery, and safe repository publishing.”. The project has 525 stars on GitHub and is available under the MIT License license. Add it to your setup with `/plugin marketplace add levnikolaevich/claude-code-skills`.

Installation

Add Claude Code Skills to your agent with:

/plugin marketplace add levnikolaevich/claude-code-skills

Always review a skill's source before installing it. This command comes from the skill's public repository; the linked repo is the source of truth for exact setup steps.

When to use it

Reach for Claude Code Skills when you want testing help from Claude Code without writing the same instructions every session. Load the skill and the agent picks it up automatically for relevant tasks.

Strengths

  • Clear MIT License license — safe to read and adapt
  • Established project with 525 GitHub stars
  • Declares compatibility with Claude Code, Codex
  • Actively maintained (recent commits)

Topics

agent-skillsai-agentsanthropicclaude-codeclaude-code-skillscode-reviewcodebase-auditcodexdeveloper-productivitydeveloper-toolsgithub-actionsopenaiperformance-optimizationplugin-marketplaceproduct-discoverysoftware-architecturetesting

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