Bug Fix Skill

Interactive workflow to identify, fix, and validate bugs in Python and Node.js projects.

Usage

Ask Claude to fix bugs:

• "Fix this bug"
• "Help me debug this error"
• "Fix the failing test"
• "Resolve this issue"

Or use the slash command: /fix

How It Works

1. Identify the Bug

• Examines recent git changes
• Checks for error messages or stack traces
• Runs relevant tests to reproduce the issue
• Identifies the root cause

2. Suggest Fixes

• Proposes specific code changes
• Explains the reasoning behind each fix
• Considers multiple approaches if applicable

3. Apply the Fix

• Makes targeted code changes
• Follows project coding standards
• Preserves existing functionality

4. Validate the Fix

• Runs relevant tests to verify the fix
• Checks for type errors (mypy/tsc)
• Ensures no new issues were introduced
• Confirms the original issue is resolved

Supported Languages

• Python: pytest, mypy, script execution
• JavaScript/Node.js: jest/mocha, TypeScript checking, script execution

Workflow Example

1. Running tests to identify failing cases...
2. Found error in auth.py:42 - undefined variable 'user_id'
3. Suggesting fix: Add user_id parameter to function signature
4. Applying fix to auth.py
5. Running tests again... ✓ All tests pass
6. Fix validated successfully!

Tips

• Provide error messages or stack traces for faster diagnosis
• Specify which test is failing if known
• The skill focuses on fixing one bug at a time for clarity