A family of small protocols for the perceptual side of designer-agent collaboration.
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Updated
May 21, 2026 - Python
A family of small protocols for the perceptual side of designer-agent collaboration.
PencilPlaybook is the UI Skills / Taste-Skill for Pencil.dev + Claude Code — a design playbook that gives Claude real perceptual psychology and senior-level guardrails so it stops producing averaged-out AI slop.
A perceptual frontend skill for Claude Code. Exact CSS values, lookup tables, and formulas grounded in visual science so Claude stops writing averaged-out frontend code.
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