chart-type-chooser SKILL.md skillA

chart-type-chooser from alto-r/nature-figure-craft is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add alto-r/nature-figure-craft/chart-type-chooser@git:20261103.48824bb

Pins git:20261103.48824bb in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
alto-r/nature-figure-craft
Path
chart-type-chooser/SKILL.md
Versions recorded
2
Latest version
git:20261103.48824bb, committed Nov 3, 2026
First version recorded
Aug 28, 2026
Size
27,051 bytes
Repository stars
74
License
MIT

Decide WHICH chart to draw before drawing it. Profiles the data file first, proposes the candidate claims that data can actually support (numbers already computed), lets the user pick one and choose among the expensive options (map or no map, facets or one panel, points or summary), then returns two or three candidate chart types with reasons, the rejected alternatives, the encoding plan, and an anti-pattern check. Covers roughly seventy chart types across nine communicative intents…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Chart Type Chooser

## Client compatibility

Use this skill in Claude Code or OpenAI Codex with the same workflow and resources.
Resolve `assets/` and `references/` relative to this `SKILL.md`, not the user's
working directory; pass the user's data file by its actual path. Run commands in
the user's project so generated files stay with their work.

In Codex, invoke explicitly with `$chart-type-chooser` or let the client select it.
When handing off to `nature-figure-production` or another client session, carry
forward the data paths, computed profile, chosen claim, filters, chart type and
encoding plan. If the production skill is unavailable, return that plan for the
user to use later.

## Overview

Most bad figures are not badly *rendered* — they are badly *chosen*. A beautifully
styled grouped bar chart of a time series is still the wrong figure. Choice comes
before craft, and it is decided by what the figure must say, not by what data happens
to be in the dataframe.

This skill runs an eight-step selection procedure and returns candidates with reasons.
It does not produce final artwork; hand off to `nature-figure-production` for that.

Load references on demand:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add alto-r/nature-figure-craft/chart-type-chooser@sha256:900bebc1d071541f

The line at the top of this page pins the label git:20261103.48824bb, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_a2czkbsza7nbksdm.svg)](https://markdownregistry.com/a/art_a2czkbsza7nbksdm)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Aug 28, 2026 and Nov 3, 2026, about one every 67 days.

versioncommittedcommitsizeaudit
git:20261103.48824bb latest2026-11-03 48824bb 27,051 BA view · diff
git:20260828.64624312026-08-28 6462431 26,251 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (27051 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

alto-r/nature-figure-craft · 74 stars · license MIT · pushed 2026-11-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_a2czkbsza7nbksdm
GET https://markdownregistry.com/api/v1/resolve?ref=alto-r/nature-figure-craft/chart-type-chooser
GET https://markdownregistry.com/api/v1/blob/900bebc1d071541f370d39f5d251fc244b1a234991442263111860b9f41e1e27

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from alto-r/nature-figure-craft

AGENTS.md AGENTS.md file
alto-r/nature-figure-craft · AGENTS.md
git:20261103.48824bb · audit A · 74 stars
nature-figure-production SKILL.md skill
alto-r/nature-figure-craft · nature-figure-production/SKILL.md · Produce, style and audit submission-ready research figures once the chart type is settled. Use for Nature-family…
git:20261103.48824bb · audit A · 74 stars

Every file in alto-r/nature-figure-craft

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