Investigate first

SkillDev tools

Diagnose ambiguous failures before editing. Use for unknown causes, intermittent behavior, performance regressions, or investigations needing evidence-ranked hypotheses.

Available today. Use it from your connected AI after setup.

Connect ahel once, and every AI you use reads what you have installed.

Then ask your AI: use the Investigate first skill

What this skill tells your AI

The instructions your AI receives, as published by juliusbrussee/caveman in skills/investigate-first/SKILL.md and read by ahel’s review.

Gather evidence before changing product code.

  • Separate observed symptom from inferred cause.
  • Trace inputs, state transitions, ownership boundaries, and failure output.
  • Rank hypotheses by evidence and cheap falsification value.
  • Do not edit until one credible mechanism explains evidence.
  • Stop exploration when evidence is sufficient to name cause or exact blocker.

Report cause and proof. Make no fix unless task authorizes implementation.

Signals

GitHub stars
105k
Forks
6k
Last commit
Sep 2026
Installs
47k installs
Advanced
Catalog kind
skill
Gateway key
investigate-first
Source
github.com/juliusbrussee/caveman