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 hamzabellouch/agent-skills --skill shopify-liquid-app-devgit clone --depth 1 https://github.com/hamzabellouch/agent-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/hamzabellouch/agent-skills/shopify-liquid-app-dev)<a href="https://agentmods.dev/skills/hamzabellouch/agent-skills/shopify-liquid-app-dev"><img src="https://agentmods.dev/badge/skills/hamzabellouch/agent-skills/shopify-liquid-app-dev/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/hamzabellouch/agent-skills/shopify-liquid-app-dev"><img src="https://agentmods.dev/badge/skills/hamzabellouch/agent-skills/shopify-liquid-app-dev.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 | $0.00035 | $0.01764 |
| Opus 5 | $0.00017 | $0.00882 |
| Sonnet 5 | $0.00007 | $0.00353 |
| Haiku 4.5 | $0.00003 | $0.00176 |
Grade A, and why
shopify-liquid-app-dev 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Shopify Liquid Theme & App Extension Development
Overview
This skill provides guidelines and patterns for building scalable Shopify themes using Liquid and developing full-stack Shopify Apps with Theme App Extensions, Admin GraphQL APIs, and secure Webhook Subscribers.
1. Shopify Architecture Principles
- Theme App Extensions over Direct Code Injection: Never modify a merchant's
theme.liquiddirectly via script tags. Use Theme App Extensions (app-blockandapp-embed-block) to ensure zero left-over code upon app uninstallation. - GraphQL Admin API over REST: Prefer the GraphQL Admin API for all backend store mutations and data queries to optimize payloads and enforce strict schema typing.
- Liquid Performance Optimization: Avoid nested loops over large collections (
{% for product in collections.all.products %}). Cache expensive Liquid calculations with{% cache %}blocks where available. - Mandatory HMAC Webhook Verification: Verify
X-Shopify-Hmac-SHA256signatures on all incoming webhooks before processing store events (orders/create,products/update). - Session Token Auth (App Bridge): Utilize Shopify App Bridge with JWT session tokens for seamless, iframe-embedded app administration without third-party cookie dependencies.
2. Shopify Extension Architecture
[ Customer Browser ]
│
│ 1. Render Theme with Liquid App Extension
▼
[ Shopify Storefront ]
│ 2. App Embed Block (JavaScript / Storefront API)
▼
[ Shopify App Backend (Remix/Node) ] ──(GraphQL Admin API)──▶ [ Shopify Core ]
│
│ 3. Asynchronous Webhooks (HMAC Verified)
▼
[ App Database / Queue ]
| Component | Standard Path | Purpose | Key Constraints |
|---|---|---|---|
| App Block | extensions/theme-ext/blocks/*.liquid |
Render interactive UI sections inside product pages | Must define schema with target: section |
| App Embed Block | extensions/theme-ext/blocks/*.liquid |
Inject global storefront scripts/styles | target: body or head |
| Admin API | /admin/api/2026-04/graphql.json |
Programmatic store management | Rate limited by cost points (1000 pts limit) |
| Storefront API | /api/2026-04/graphql.json |
Unauthenticated customer-facing queries | Requires public Storefront Access Token |
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.
- 6d ago First seen · 194 lines · 35 tokens per session scan A dbeeb31263f1
shopify-liquid-app-dev is a skill published in the GitHub repository hamzabellouch/agent-skills (4 stars, last pushed 1mo ago), licensed MIT. It adds 35 tokens to every session and 1,764 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 2026-09-03.
Other skills, from other repositories
frontend-ui-engineering
Builds production-quality, accessible, responsive user-facing UIs. Use when building or modifying interfaces and pages, creating components, implementing layouts, meeting WCAG accessibility requirements, managing state, or when the output needs to look and feel production-quality rather than AI-generated.
ui-designer
Elite UI/UX Design Lead & Frontend Architect. Generates distinctive, non-templated interfaces with opinionated aesthetics, deliberate typography, and exact UX copy. Triggers on UI design, frontend styling, or layout creation.
html-css-responsive
Custom Instructions: HTML5 & CSS3 Responsive Design Expert.
shopify-developer
Complete Shopify development reference covering Liquid templating, OS 2.0 themes, GraphQL APIs, Hydrogen, Functions, and performance optimization (API v2026-01). Use when working with .liquid files, building Shopify themes or apps, writing GraphQL queries for Shopify, debugging Liquid errors, creating app extensions…
component-design
Design reusable React components with compound patterns, controlled/uncontrolled hybrids, typed prop APIs, async state handling, and ARIA accessibility. Use when the user creates, refactors, or reviews React components, or mentions props, hooks, .tsx files, component APIs, or accessible UI patterns.
accessibility-testing
Run automated WCAG audits, manual keyboard/screen reader testing, and CI a11y gates.