Remus3

Root Cause Fix — Testing skill for Claude Code

Testing community

Root-cause-first TDD loop for any bug or data fix.

How to install Root Cause Fix

Installs to ~/.claude/commands/remus3-legion-wallpaper-root-cause-fix.md

Terminal
mkdir -p ~/.claude/commands && curl -fsSL https://raw.githubusercontent.com/Remus3/Legion-Wallpaper/HEAD/.claude/commands/root-cause-fix.md -o ~/.claude/commands/remus3-legion-wallpaper-root-cause-fix.md

Restart Claude Code, or start a new session, for it to be picked up.

What Root Cause Fix does


description: Root-cause-first TDD loop for any bug or data fix. Forces a failing reproduction test BEFORE touching production code, a deliberate grep for every sibling case sharing the same root cause, then the minimal fix, then an explicit corrupted-data backfill check. Use whenever a bug is reported or a data/pollution/scorer fix is needed - it converts a too-narrow first attempt into a provably-complete one.

**SUBAGENT-FIRST (standing protocol, operator 2026-06-20).** Always use su

Alternatives in Testing

  • L Debug Trace — Analytically debug issues by tracing data flow through code - no logs, no test-and-see 3k ★
  • Test Fixing — Detect failing tests and propose patches or fixes 475 ★
  • Create Seeder — Scaffold a seeder and factory for a module to populate test data 325 ★

Full documentation available on GitHub

View Source Repository