canonical-format-checker

Installation
SKILL.md

Canonical Format Checker

Overview

Prevent format drift by verifying content follows authoritative canonical sources. When teaching a pattern that exists elsewhere in the platform (skills, subagents, ADRs, etc.), this skill ensures the taught format matches the canonical source.

Why this matters: The Chapter 14 format drift failure occurred because the lesson taught skill format differently from Chapter 5 (canonical source). Students learned incorrect patterns that contradicted earlier chapters.

When to Use This Skill

Automatic Triggers (check before implementation):

  • Lesson teaches how to create skills → Check .claude/skills/ structure
  • Lesson teaches how to write subagents → Check .claude/agents/ structure
  • Lesson teaches ADR format → Check specs/*/adrs/ structure
  • Lesson teaches PHR format → Check history/prompts/ structure
  • Lesson teaches specification format → Check specs/*/spec.md structure

Manual Triggers (user requests):

  • "Check canonical format for skills"
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Installs
46
GitHub Stars
158
First Seen
Jan 21, 2026