markvis SKILL.md skillA

markvis from geekplux/markvis is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add geekplux/markvis/markvis@git:20261007.5e98f38

Pins git:20261007.5e98f38 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: geekplux/markvis
Path: skills/markvis/SKILL.md
Versions recorded: 9
Latest version: git:20261007.5e98f38, committed Oct 7, 2026
First version recorded: Sep 14, 2026
Size: 3,318 bytes
Repository stars: 1,598
License: MIT

Use when the user wants a chart of numbers in Markdown (bar, line, area, scatter, pie, hist, heatmap, funnel, waterfall, radar, gauge, sankey, treemap, dumbbell, bullet, boxplot, calendar) from a table — emit a Markdown code block tagged chart|markvis|vis, never a flowchart pie/xychart, never a PNG, never Vega-Lite JSON as the default.

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

# markvis

Charts of numbers in Markdown. The table is the source (comma-separated rows or a Markdown table). Tags `chart`, `markvis`, and `vis` are the same language. Types: `bar` `line` `area` `scatter` `pie` `hist` `heatmap` `funnel` `waterfall` `radar` `gauge` `sankey` `treemap` `dumbbell` `bullet` `boxplot` `calendar`.

Short form for a system prompt (250 tokens, same language): [docs/prompt.md](https://github.com/geekplux/markvis/blob/master/docs/prompt.md).

## When to use

- Numbers in a doc need a chart and the rows must stay editable.
- An agent should be able to add a row, change `type`, and regenerate.
- Readers without a plugin still need the table.

## When not to use

- Flowcharts, sequence, state, ER → a structure diagram tool.
- Invented PNG / screenshot as the source of truth.
- Vega-Lite / ECharts JSON as the default artifact (optional later `engine:`, not core).
- Invented type ids (`donut`, `sunburst`, `chord`, `stacked-bar` as its own type).

## Fence shape

```
```chart
markvis: 2
type: bar
title: Q3 Revenue
unit: USD k
x: month
y: revenue

month,revenue
Jan,120
Feb,180
Mar,150
```
```
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add geekplux/markvis/markvis@sha256:a3029ff1160a95ed

The line at the top of this page pins the label git:20261007.5e98f38, 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](https://markdownregistry.com/badge/art_gltodok4ljucknxh.svg)](https://markdownregistry.com/a/art_gltodok4ljucknxh)

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

Versions

The registry has recorded 9 versions of this file, between Sep 14, 2026 and Oct 7, 2026, about one every 3 days.

version	committed	commit	size	audit
git:20261007.5e98f38 latest	2026-10-07	5e98f38	3,318 B	A	view · diff
git:20261007.7286e03	2026-10-07	7286e03	3,175 B	A	view · diff
git:20261007.39c2f5b	2026-10-07	39c2f5b	3,059 B	A	view · diff
git:20261007.10acd6a	2026-10-07	10acd6a	3,021 B	A	view · diff
git:20260925.a7496bd	2026-09-25	a7496bd	3,010 B	A	view · diff
git:20260925.a35c494	2026-09-25	a35c494	2,928 B	A	view · diff
git:20260925.7112986	2026-09-25	7112986	2,505 B	A	view · diff
git:20260925.38bc9d2	2026-09-25	38bc9d2	2,469 B	A	view · diff
git:20260914.9881011	2026-09-14	9881011	2,374 B	A	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 (3318 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

geekplux/markvis · 1,598 stars · license MIT · pushed 2026-10-22 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_gltodok4ljucknxh
GET https://markdownregistry.com/api/v1/resolve?ref=geekplux/markvis/markvis
GET https://markdownregistry.com/api/v1/blob/a3029ff1160a95edc63a80ac9d2bea27e481b75e3a854109627b64121bb38924

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.