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.
npx skills add ahgraber/skills --skill alt-textgit clone --depth 1 https://github.com/ahgraber/skillsWrote 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.
[](https://agentmods.dev/skills/ahgraber/skills/alt-text)<a href="https://agentmods.dev/skills/ahgraber/skills/alt-text"><img src="https://agentmods.dev/badge/skills/ahgraber/skills/alt-text/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.
<a href="https://agentmods.dev/skills/ahgraber/skills/alt-text"><img src="https://agentmods.dev/badge/skills/ahgraber/skills/alt-text.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00399 |
| Opus 5 | $0.00019 | $0.00199 |
| Sonnet 5 | $0.00008 | $0.00080 |
| Haiku 4.5 | $0.00004 | $0.00040 |
Grade A, and why
alt-text 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 8d 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.
What it actually says
Alt-Text
When to Use
- User attaches an image and asks for a description or alt-text
- User shares a chart, diagram, schematic, or screenshot and wants it explained
- User needs an accessible description for documentation or publishing
If the image is not attached, ask the user to attach it before proceeding.
Invocation Notice
- Tell the user when this skill is running:
alt-text. Skip the notice when the user asked for the skill by name or slash command; spelling and spacing need not match. A phrase from this skill's own trigger list is not a name — naming the work is not naming the skill.
Instructions
Describe the figure so a reader who cannot see it understands both what it depicts and what it communicates. The description should be detailed enough that someone could reproduce or redraw the figure from the text alone.
Cover, as applicable:
- Figure type and overall structure (e.g., bar chart, flowchart, photograph, schematic)
- Key elements: labels, axes, data values, components, or steps
- Relationships, trends, comparisons, sequences, or hierarchies shown
- Outcomes, conclusions, or emphasis the figure conveys
Write in plain declarative sentences, present tense. End with a period.
Do not:
- Open with "image of," "picture of," "figure of," "graphic of," or similar
- Use phrases like "shown above," "as seen," or "depicted here"
- Describe visual styling (colors, fonts, layout) unless it carries meaning
- Guess at emotions, identities, or intent not clearly conveyed by the figure
Output
Respond with the description only — no preamble, commentary, or metadata.
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.
- 8d ago First seen · 48 lines · 39 tokens per session scan A d8309d6495cb
alt-text is a skill published in the GitHub repository ahgraber/skills (5 stars, last pushed yesterday), licensed CC0-1.0. It adds 39 tokens to every session and 399 once invoked, about $0.0002 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.
Other skills, from other repositories
webgl-holographic-foil
A self-contained WebGL2 hero: thin-film interference over a crushed-foil surface whose palette shifts with the viewing angle; move the cursor to tilt the film.
html-ppt-hermes-cyber-terminal
OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.
html-ppt-taste-brutalist
16:9 HTML deck in tactical-telemetry / CRT-terminal taste. Deactivated-CRT charcoal slides, white-phosphor monospace, hazard-red accent, scanline overlay, ASCII syntax, density over decoration. Distilled from Leonxlnx/taste-skill brutalist-skill (Tactical Telemetry mode).
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
accessibility
Consolidated accessibility skill entrypoint for WCAG 2.2, ARIA Authoring Practices, cognitive accessibility, Section 508, EN 301 549, design intent verification, and the Accessibility Planner workflow.
make-resume
A Chinese-language tool for creating editable HTML resumes that can be changed in a browser and printed to PDF. It uses available resume templates when they are installed and otherwise provides a simpler fallback.