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 5.5 | $0.00014 | $0.00706 |
| Sonnet 5.5 | $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 1mo 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.
- 1mo 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 (8 stars, last pushed 14d ago), licensed MIT. It adds 35 tokens to every session and 1,764 once invoked, about $0.0001 per session on Opus 5.5. 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.
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