cartography-geoviz

cartography-geoviz is a skill for Claude Code, Codex from muend/geoai-skills. It costs 98 tokens per session (1,453 once invoked), scanned A, original, MIT.

A guide to designing and reviewing maps that communicate geographic data clearly and honestly.

In plain words
What is it for?
It helps choose suitable map types for rates, counts, continuous surfaces, movement, and multiple dates, for print or interactive maps.
Why use it?
It helps prevent choices about colours, map projections, class ranges, or scaling from hiding or exaggerating patterns.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the geoai plugin — 18 skills shipped together

Good fit It helps choose suitable map types for rates, counts, continuous surfaces, movement, and multiple dates, for print or interactive maps.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/muend/geoai-skills/cartography-geoviz
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add muend/geoai-skills --skill cartography-geoviz
Clone the repo
git clone --depth 1 https://github.com/muend/geoai-skills

Made for: Claude Code, Codex.

Or install geoai, the plugin that ships this one along with the rest of its 18 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cartography-geoviz

README.md
[![agentmods](https://agentmods.dev/badge/skills/muend/geoai-skills/cartography-geoviz/github.svg)](https://agentmods.dev/skills/muend/geoai-skills/cartography-geoviz)
Your own site
<a href="https://agentmods.dev/skills/muend/geoai-skills/cartography-geoviz"><img src="https://agentmods.dev/badge/skills/muend/geoai-skills/cartography-geoviz/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cartography-geoviz

Your own site · 80×15
<a href="https://agentmods.dev/skills/muend/geoai-skills/cartography-geoviz"><img src="https://agentmods.dev/badge/skills/muend/geoai-skills/cartography-geoviz.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,453 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 66
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00098 $0.01453
Opus 5 $0.00049 $0.00727
Sonnet 5 $0.00020 $0.00291
Haiku 4.5 $0.00010 $0.00145

Measured 12d ago against content hash acf568d4ca4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cartography-geoviz scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cartography-geoviz/SKILL.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cartography & Geovisualization

Purpose: maps that communicate honestly. Cartographic choices (class breaks, ramps, normalization, projection) can manufacture or hide patterns; this skill treats them as analytical decisions with stated rationale, not styling.

The first three questions

  1. What's the message? One map = one message. If two variables compete, consider small multiples or a bivariate scheme — not twelve legend classes.
  2. Normalized? Choropleths of raw counts are population maps in disguise. Rates, densities, or per-capita for area-based color; raw magnitudes → proportional symbols instead.
  3. Static or interactive? Print/PDF/paper → matplotlib/QGIS layout; exploration/stakeholders → Folium/MapLibre; big point data → Kepler.gl/deck.gl (GPU).

Thematic map type selection

Data Map type
Rate/ratio by polygon Choropleth
Count/magnitude by place Proportional/graduated symbols
Two related rates Bivariate choropleth (3×3 max)
Individual-level density Dot density or KDE surface (label bandwidth)
Continuous field (raster) Classified or stretched render + hillshade context
Movement/OD Flow map (width∝volume), aggregate to avoid hairballs
Change over time Small multiples > animation for analysis; animation for outreach

Classification — the honesty lever

  • Natural breaks (Jenks): default for skewed data; breaks are data-specific, so NOT comparable across maps/dates.
  • Quantiles: guaranteed color balance; can split near-identical values.
  • Equal interval: comparable and intuitive; fails on skew.
  • Manual/defined: the ONLY correct choice for map series (same breaks across all dates/regions) and for domain thresholds (WHO limits, slope classes).
  • 5±2 classes; show the histogram with breaks in the workflow; state the scheme in the caption/metadata. Try two schemes — if the story changes materially, the story is the classification, and the reader must be told.

Read the full file on GitHub · 137 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 137 lines · 98 tokens per session scan A acf568d4ca4d

Subscribe to this mod's changes

cartography-geoviz is a skill published in the GitHub repository muend/geoai-skills (18 stars, last pushed 8d ago), licensed MIT. It adds 98 tokens to every session and 1,453 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories