I want to teach good Matplotlib taste to agents and humans. This repo contains: 1. Agent instructions + design motifs (Claude Code skills + a CLAUDE.md). 2. An online blog tutorial of the same skills, for people. 3. minerva.mplstyle, my opinionated sane matplotlib defaults.Inspired by Tufte s book: The Visual Display of Quantitative Information (a gift from my boss!), plus data-to-viz.com and the python-graph-gallery. Aiming for halfway to the gorgeous plots in the paid matplotlib-journey.com, but free and open to share with friends. :)