9arm-skills
9arm-skills is a curated collection of AI agent skills for Claude Code that enhance debugging, code review, project management communication, and context management. Each skill is packaged as a SKILL.md file with YAML frontmatter and optional supporting scripts, organized into engineering and productivity categories. The skills teach AI agents structured methodologies like four-mantra debugging discipline, post-mortem analysis, and outsider-perspective code scrutiny. Developers can install individual skills via npx or symlink the entire collection into their Claude skills directory.
Key Features
Use Cases
- 01Enforcing systematic debugging methodology during troubleshooting sessions
- 02Generating detailed engineering post-mortems after bug fixes with root cause analysis
- 03Conducting thorough code reviews that question assumptions and verify actual behavior
- 04Offloading repetitive coding tasks like bulk renames and scaffolding to a cost-effective subagent
- 05Translating technical updates into management-appropriate language for JIRA, Slack, or email
- 06Preventing context window overflow during extended Claude Code sessions
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9arm-skills — FAQ
What is 9arm-skills?+
9arm-skills is a collection of structured agent skills for Claude Code that teach AI assistants specific methodologies for debugging, code review, documentation, and workflow management. Each skill is defined in a SKILL.md file with YAML metadata that the agent reads and follows.
How do I install 9arm-skills in Claude Code?+
The recommended method is running 'npx skills add thananon/9arm-skills' from your terminal. Alternatively, you can clone the repository and use the included link-skills.sh script to symlink skills into ~/.claude/skills/.
Which AI clients work with 9arm-skills?+
These skills are designed for Claude Code and any agent that supports the SKILL.md format with YAML frontmatter. The npx skills installer works across different agent platforms that follow this convention.
Do I need API keys or prerequisites for 9arm-skills?+
Most skills require only Claude Code or a compatible agent. The qwen-agent skill requires the claude-9arm command-line tool to delegate tasks to a Qwen-backed subagent, which may need separate configuration.
Is 9arm-skills free to use?+
Yes, the skill collection is open source and available on GitHub at no cost. However, using the skills requires access to Claude Code or another compatible AI agent service.
Can I use individual skills without installing the entire collection?+
Yes, each skill is self-contained in its own directory with a SKILL.md file. You can manually copy individual skill directories to your agent's skills folder or use the npx installer to add the full collection.
How do I install 9arm-skills?+
Open the source repository on GitHub and follow its README. 9arm-skills is a skill — MCP Agents Market links you directly to the official repo.
Is 9arm-skills free?+
9arm-skills is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.