alt-text skillA
alt-text is agent-read markdown (skill) from ahgraber/skills: Use when the user shares an image, chart, diagram, screenshot, or figure and needs it described — for alt-text, accessibility, documentation, or to understand what it depicts..
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
mdr add ahgraber/skills/alt-text@git:20260819.209d97bmdr add ahgraber/skills/alt-text@sha256:d8309d6495cb9a38Pin 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.
[](https://markdownregistry.com/a/art_5gkbu4pgcj4or7il)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260819.209d97b latest | 2026-08-19 | 209d97b | 1,845 B | A | view · diff |
| git:20260501.ee37541 | 2026-05-01 | ee37541 | 1,639 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1845 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
ahgraber/skills · 5 stars · license CC0-1.0 · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5gkbu4pgcj4or7il GET https://markdownregistry.com/api/v1/resolve?ref=ahgraber/skills/alt-text GET https://markdownregistry.com/api/v1/blob/d8309d6495cb9a383719d088f4fb373c15f4a98b41f3a94177af447158ec2af3
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.