posit-dev/skills · alt-text/SKILL.md

alt-text skillA

alt-text is agent-read markdown (skill) from posit-dev/skills: Generate and improve accessible alt text for data visualizations and images in R packages and Quarto documents. Use when the user wants to add, improve, or audit alt text for figures in a pkgdown site or .qmd files. Activate for requests that mention fig-alt, fig.alt, figure descriptions, or alt text in the context of an R package or Quarto document..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add posit-dev/skills/alt-text@v1.0
Exact content
mdr add posit-dev/skills/alt-text@sha256:0d33621f007e3d2a

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_yusxtkcjo3ld5dmm.svg)](https://markdownregistry.com/a/art_yusxtkcjo3ld5dmm)

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Versions

versioncommittedcommitsizeaudit
v1.0 latest2026-04-28 030f607 6,862 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (6862 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

posit-dev/skills · 516 stars · license MIT · pushed 2026-09-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yusxtkcjo3ld5dmm
GET https://markdownregistry.com/api/v1/resolve?ref=posit-dev/skills/alt-text
GET https://markdownregistry.com/api/v1/blob/0d33621f007e3d2adae1264cf9caf93d406635a106373e4995d629066e511d37

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.