shopify-developer

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Summary

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, migrating from Scripts to Functions, or building headless storefronts. Triggers on "Shopify", "Liquid template", "Hydrogen", "Storefront API", "theme development", "Shopify Functions", "Polaris". Do NOT use for non-Shopify e-commerce platforms.

SKILL.md

Shopify Developer Reference

Comprehensive reference for professional Shopify development - API version 2026-01.

Quick Reference

Item	Value
API version	`2026-01` (stable)
GraphQL Admin	`POST https://{store}.myshopify.com/admin/api/2026-01/graphql.json`
Storefront API	`POST https://{store}.myshopify.com/api/2026-01/graphql.json`
Ajax API (theme)	`/cart.js`, `/cart/add.js`, `/cart/change.js`
CLI install	`npm install -g @shopify/cli`
Theme dev	`shopify theme dev --store {store}.myshopify.com`
App dev	`shopify app dev`
Deploy	`shopify app deploy`
Docs	shopify.dev

Choose Your Path

Read the reference file(s) that match your task:

Liquid templating - writing or debugging .liquid files:

references/liquid-syntax.md - Tags, control flow, iteration, whitespace, LiquidDoc

Deprecated	Replacement	Deadline
Shopify Scripts	Shopify Functions	August 2025 (migration), sundown TBD
checkout.liquid	Checkout Extensibility	August 2024 (Plus), done
REST Admin API	GraphQL Admin API	Active deprecation (no removal date yet)
Legacy custom apps	New auth model	January 2025 (done)
Polaris React	Polaris Web Components	Active migration
Remix (app framework)	React Router 7	Hydrogen 2025.5.0+

File	Lines	Coverage
liquid-syntax.md	~600	Tags, control flow, iteration, variables, whitespace, LiquidDoc
liquid-filters.md	~870	String, numeric, array, Shopify-specific, date, URL, colour filters
liquid-objects.md	~695	All Shopify objects: product, variant, collection, cart, customer, order, etc.
theme-development.md	~1200	File structure, JSON templates, sections, blocks, settings schema, layout
api-admin.md	~595	GraphQL queries/mutations, REST (legacy), OAuth, webhooks, rate limiting
api-storefront.md	~235	Storefront API, Ajax API, cart operations, Customer Account API
app-development.md	~760	CLI, app architecture, extensions, Polaris Web Components, deployment
functions.md	~300	Function types, Rust/JS targets, CLI workflow, Scripts migration
hydrogen.md	~375	Setup, routing, data loading, Storefront API, deployment
performance.md	~605	Images, JS, CSS, fonts, Liquid, third-party scripts, Core Web Vitals
debugging.md	~650	Liquid, JavaScript, API, cart, webhook, theme editor troubleshooting

shopify-developer

Summary

SKILL.md

Shopify Developer Reference

Quick Reference

Choose Your Path

Deprecation Notices

Liquid Essentials

API Essentials

Reference Files

Related skills