082 Claude 1940fc05

Python Analytics Skills - Plugin Development

Adding a New Skill

1. Create a directory under skills/:

   skills/your-skill-name/
   ├── SKILL.md          # Required: main instructions
   └── references/       # Optional: detailed reference docs
   

2. SKILL.md must have YAML frontmatter with name and description:

   ---
   name: your-skill-name
   description: >
     When to trigger this skill. Include keywords and task descriptions
     that help the assistant decide when to load it.
   ---
   

3. The name field must match the directory name exactly.

4. Add the skill path to .claude-plugin/marketplace.json in the skills array:

   "skills": [
     "./skills/pymc-modeling",
     "./skills/marimo-notebook",
     "./skills/your-skill-name"
   ]
   

5. Add an entry to skills.json.

6. Run ./install.sh --validate to verify.

Skill Structure Requirements

• SKILL.md is the entry point -- keep it focused and actionable
• Put detailed reference material in references/*.md and link from SKILL.md
• Description should be under 1024 characters
• Include trigger phrases in the description (keywords that indicate when the skill should activate)

Testing Locally

# Validate structure
./install.sh --validate

# Test as a plugin
claude --plugin-dir .

# Test hooks
echo '{"user_prompt": "test prompt"}' | bash hooks/suggest-skill.sh

Hook Development

Hooks live in hooks/hooks.json. The plugin uses UserPromptSubmit to suggest skills.

To add a new hook:

1. Add the hook configuration to hooks/hooks.json
2. If using a command hook, create the script and make it executable
3. Use ${CLAUDE_PLUGIN_ROOT} for all file paths (never hardcode)
4. Hooks must exit 0 -- failures should be handled gracefully
5. Set appropriate timeouts (default: 60s for commands, 30s for prompts)
6. Restart Claude Code to pick up hook changes (hooks load at session start)

See the hook-development skill for full reference.