
An open-source skill set for Claude Code and Codex CLI that designs and writes structured STEM textbooks using UbD planning, outline gates, chapter workflows, exercise generation, answer verification, and resumable progress.
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Ranked by how closely each one matches Textbook Writer Skills's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Thin market — few comparable priced products; treat statistics as indicative.