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Use when a repository contains or needs a Sandpaper project brain.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
| name | sandpaper |
| description | Use when a repository contains or needs a Sandpaper project brain. |
Sandpaper maintains brain/, a navigable service manual for the repository. Repository files are canonical truth
for implementation and rendered output. The brain is canonical truth for durable
intent, decisions, plans, progress, work history, and learnings. Provider sessions are noncanonical compute context
and must not become a competing source of truth.
brain/index.html is the cover and contains the #brain-state digest, NOW, needs-you, latest,
and canvas.product/, engineering/, and project/; books include log.html,
decisions.html, learnings.html, and wiki/.assets/theme.css skins the brain and assets/brain.js derives counts and progress.Durable facts use .entry elements with data-cid mirrored to id, data-kind, data-status,
data-date, at least one canonical data-ref, and optional data-lens. Link to canonical material;
do not copy it. Never remove or reuse cids.
Use $sandpaper <action> [arguments].
Read the first word after $sandpaper as the action. Supported actions are canvas, decide,
help, init, learn, log, open, plan, release, serve, stamp, sync, and theme.
Read and execute references/workflows/<action>.md, treating the remaining words as arguments.
If the action is absent or unknown, execute references/workflows/help.md.
Use the normal user-input mechanism whenever the workflow requires human confirmation.