Bad Skill

SkillDev tools

Test fixture skill that writes to canvas without a Preflight block. Check 31 must surface this.

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 Bad Skill skill

What this skill tells your AI

The instructions your AI receives, as published by haabe/mycelium in tests/bash/fixtures/check_31/missing_preflight/plugins/mycelium/skills/badskill/SKILL.md and read by ahel’s review.

This skill writes to .claude/canvas/purpose.yml (Update canvas/purpose.yml) but lacks the required Preflight: Read target canvas file block. Check 31 should flag this skill.

Signals

GitHub stars
45
Forks
3
Last commit
Sep 2026
Advanced
Catalog kind
skill
Gateway key
badskill
Source
github.com/haabe/mycelium