What is shopify-alt-text?

A tool for filling in missing alt text on images in a Shopify store. Alt text is a short description that screen readers announce and search engines can use as context.

Use it to find and update missing alt text for product images and images in Shopify's Files library.

It improves access for people who cannot see images and addresses missing-text issues without rewriting descriptions that already exist.

shopify-alt-text — Skill for Claude Code by kgelster

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 kgelster/awesome-ecom-skills --skill shopify-alt-text

Clone the repo

git clone --depth 1 https://github.com/kgelster/awesome-ecom-skills

Made for: Claude Code.

Or install ecom, the plugin that ships this one along with the rest of its 10 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kgelster/awesome-ecom-skills/shopify-alt-text/github.svg)](https://agentmods.dev/skills/kgelster/awesome-ecom-skills/shopify-alt-text)

Your own site

<a href="https://agentmods.dev/skills/kgelster/awesome-ecom-skills/shopify-alt-text"><img src="https://agentmods.dev/badge/skills/kgelster/awesome-ecom-skills/shopify-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kgelster/awesome-ecom-skills/shopify-alt-text"><img src="https://agentmods.dev/badge/skills/kgelster/awesome-ecom-skills/shopify-alt-text.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 120 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,280 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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: 4 findings, up to high

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 →

high Privilege Escalation · line 58
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
high Privilege Escalation · line 63
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
high Privilege Escalation · line 130
Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
medium Data Exfiltration · line 71
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00120	$0.02280
Opus 5	$0.00060	$0.01140
Sonnet 5	$0.00024	$0.00456
Haiku 4.5	$0.00012	$0.00228

Measured 12d ago against content hash 3da2f7dc3cc2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

shopify-alt-text scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "https://$SHOPIFY_STORE/admin/api/2025-07/graphql.json" \

skills/shopify-alt-text/SKILL.md · 187 lines

How it starts

The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Shopify Alt Text

Backfill missing image alt text across a Shopify store. Alt text is an accessibility requirement first (screen readers announce it) and an image-SEO signal second. This skill fills the gap for images that have none; it does not rewrite alt text that already exists.

The sister backfill for SEO titles and descriptions is shopify-seo-metadata: same safe-mode doctrine, different fields. The FIND stage (measuring how many images lack alt across the catalog before you commit to a sweep) belongs to shopify-catalog-audit.

One mutation, two find paths

Images live in two places on a Shopify store, but both write through the same mutation. A product image and a Files-library image are both MediaImage nodes, which are File subtypes, so a single fileUpdate sets alt on either. There is no separate product-media alt mutation to learn.

fileUpdate is the one write. It takes the image's MediaImage GID and the new alt. This is the write path both source tools converge on. (Shopify's old productUpdateMedia is deprecated on shopify.dev; do not use it for alt text.)
Two ways to FIND the images, one way to fix them:
- Product media: page products, read each MediaImage under product.media. Needs read_products.
- Files library: page the files connection (Content → Files: theme sections, metaobjects, rich-text, collection banners). Needs read_files.
- Both hand you MediaImage GIDs; feed those straight into fileUpdate.

Full count/fetch/update/verify recipes for both find paths are in references/queries.md.

Store access

Every skill that touches the Admin API opens with this stanza. Two lanes; pick one.

Lane A, custom-app token (scriptable). In Shopify admin: Settings → Apps and sales channels → Develop apps → create an app → grant the minimum scopes below, then install and copy the Admin API access token. Export it; never write it to a committed file:

Read the full file on GitHub · 187 lines

Files

What ships with it

1 file 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.

references/queries.md 5.8 KB

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.

12d ago First seen · 187 lines · 120 tokens per session scan A 3da2f7dc3cc2

Subscribe to this mod's changes

shopify-alt-text is a skill published in the GitHub repository kgelster/awesome-ecom-skills (46 stars, last pushed 20d ago), licensed MIT. It adds 120 tokens to every session and 2,280 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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shopify-alt-text