Skills for Real Engineers. Straight from my .agents directory.
39 skills
data-forms
Agent skill from
Pick the right way to represent a dataset so a reader gets the finding in three seconds — a catalog of 20+ chart and diagram forms with when-to-use and failure modes, plus the encoding decisions that make any of them readable (takeaway headline, direct labels, kill the axis, highlight-and-mute, show the caveat). Style-agnostic — use with whatever palette or design system the destination already has. Use when charting survey results, benchmark data, usage metrics, or research findings for a post, brief, deck, or report, and whenever the default bar chart feels like it's burying the point.
How to install data-forms
install data-forms
# install the COG-second-brain pack with the skills CLI
npx skills add huytieu/COG-second-brain# or add only this skill to Claude Code: copy the folder
skills/data-forms/
# into
~/.claude/skills/data-forms/ (all projects)
.claude/skills/data-forms/ (one project)
1# data-forms23A repertoire, not a style. Distilled from Lenny's Newsletter data illustrations4(2025-2026 survey issues) — what makes those charts work is not the palette, it's the5form selection and the encoding discipline. Both are portable to any visual language.67For the visual layer, use whatever the destination already has: your product's brand8tokens for in-product surfaces, the built-in `dataviz` skill for palette construction and9accessibility, your house style for personal sites. This skill decides *what shape the data10takes* — the layer above color.1112## Start here: the picker1314| What the data does | Reach for | Form # |15|---|---|---|16| One question, 3-6 ordered answers | Ordered column · Waffle · Nested bands | 1 · 6 · 7 |17| One question, many multi-select answers | Ranked bar · Valence bar | 3 · 4 |18| Same metric, two points in time | Paired columns · Slope | 2 · 9 |19| Same metric, 3+ points in time | Time-series area · Bump | 13 · 18 |20| One metric across 7-10 ordered buckets | Staircase column | 14 |21| One metric across many unordered segments | Small multiples · Dot plot | 8 · 17 |22| Signed score (-100…+100, net, delta) | Diverging bar | 5 |23| Two groups compared across many rows | Dumbbell | 16 |24| Agreement / Likert across several statements | Centered stacked row | 19 |25| Segments × several metrics | Pill matrix | 10 |26| Open-text answers | Word cloud · Coded theme bar | 11 · 3 |27…
Excerpt shown under the repository's MIT license.
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