principle-encode-lessons-in-structure from michael-denyer/pstack-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
Apply when you catch yourself writing the same instruction a second time, or notice a recurring correction. Encode the rule as a lint, metadata flag, runtime check, or script instead of more text.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Encode Lessons in Structure
If the lesson needs judgment and cannot be encoded, make the instruction more prominent and add an example of the failure mode.
**Corollary:** If the fix is structural, only use the structural fix. The instruction is the symptom.
The line at the top of this page pins the label git:20261013.058a348, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_36t6pat22p4tvqan
GET https://markdownregistry.com/api/v1/resolve?ref=michael-denyer/pstack-claude/principle-encode-lessons-in-structure
GET https://markdownregistry.com/api/v1/blob/1568ece8b96017b6e244530f96d937317d0ac602a58f25415d9f90073b378d6c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
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