Shopify development has a lot of surface area: Liquid themes, Storefront GraphQL, Admin API, Functions, checkout extensions, Hydrogen and the Polaris app framework. A Claude Skill packages the conventions for one of those surfaces so an agent stops guessing and starts following Shopify’s own patterns.
The 15 skills below are the ones worth installing first. They are grouped by the job they do — storefront, admin data, checkout, app UI and documentation — and each one links to its FlowCay profile with setup notes.
Skills and MCP servers solve different problems. A Skill teaches the agent how to do Shopify work; an MCP server gives it live access to a store’s data. Most teams end up using both.
| Tool | Best for | Pricing | Platform |
|---|---|---|---|
| Admin API queries and mutations without guessing schema details | Free | Shopify | |
| Theme edits that follow Liquid and Online Store 2.0 patterns | Free | Shopify | |
| Discount, cart and checkout logic in Shopify Functions | Free | Shopify | |
| Hydrogen + React storefronts and Oxygen deployment | Free | Shopify | |
| Storefront API queries for products, cart and collections | Free | Shopify | |
| Metafields and metaobjects with the right definitions | Free | Shopify | |
| Partner API: apps, themes and affiliate data | Free | Shopify | |
| Customer Account API flows and customer data | Free | Shopify | |
| Payment provider integrations at checkout | Free | Shopify | |
| Checkout UI extensions with Polaris components | Free | Shopify | |
| Embedded app home pages with Polaris | Free | Shopify | |
| Admin actions and blocks at the right extension points | Free | Shopify | |
| POS UI extensions for retail workflows | Free | Shopify | |
| Customer account order and profile extensions | Free | Shopify | |
| Lookups across Shopify developer documentation | Free | Shopify |
Use these when the work happens in the theme: sections, blocks, Liquid logic, or a Hydrogen storefront. The skill supplies the file conventions and the API shape the agent should follow.
1 Liquid is an open-source templating language created by Shopify. It is the backbone of Shopify themes and is used to load dynamic content on storefronts. Keywords: liquid, theme, shopify-theme, liquid-component, liquid-block, liquid-section, liquid-snippet, liquid-schemas,…
Best for: Liquid themes, sections and Online Store 2.0 blocks
Shopify 2 Hydrogen storefront implementation cookbooks. Some of the available recipes are: B2B Commerce, Bundles, Combined Listings, Custom Cart Method, Dynamic Content with Metaobjects, Express Server, Google Tag Manager Integration, Infinite Scroll, Legacy Customer Account Flow,…
Best for: Hydrogen + React storefronts and Oxygen deployment
Shopify 3 Use for custom storefronts requiring direct GraphQL queries/mutations for data fetching and cart operations. Choose this when you need full control over data fetching and rendering your own UI. NOT for Web Components - if the prompt mentions HTML tags like <shopify-store>,…
Best for: Storefront API queries for products, cart and collections
ShopifyFor back-office work — products, orders, customers, metafields and partner data — these skills keep the agent on the Admin API instead of inventing endpoints.
4 The Admin GraphQL API lets you build apps and integrations that extend and enhance the Shopify admin.
Best for: Admin GraphQL: products, orders, inventory, metafields
Shopify 5 Use Metafields and Metaobjects to model and store custom data for your app. Metafields extend built-in Shopify data types like products or customers, Metaobjects are custom data types that can be used to store bespoke data structures. Metafield and Metaobject definitions…
Best for: Metafields and metaobjects with the right definitions
Shopify 6 The Partner API lets you programmatically access data about your Partner Dashboard, including your apps, themes, and affiliate referrals.
Best for: Partner API: apps, themes and affiliate data
Shopify 7 The Customer Account API allows customers to access their own data including orders, payment methods, and addresses.
Best for: Customer Account API flows and customer data
ShopifyCheckout is the highest-risk part of a Shopify build. These skills cover Functions, payment apps and checkout UI extensions with the constraints Shopify enforces.
8 Shopify Functions allow developers to customize the backend logic that powers parts of Shopify. Available APIs: Discount, Cart and Checkout Validation, Cart Transform, Pickup Point Delivery Option Generator, Delivery Customization, Fulfillment Constraints, Local Pickup…
Best for: Discount, cart and delivery customization logic
Shopify 9 The Payments Apps API enables payment providers to integrate their payment solutions with Shopify's checkout.
Best for: Payment provider integrations at checkout
Shopify 10 Build custom functionality that merchants can install at defined points in the checkout flow, including product information, shipping, payment, order summary, and Shop Pay. Checkout UI Extensions also supports scaffolding new checkout extensions using Shopify CLI commands.
Best for: Checkout UI extensions with Polaris components
ShopifyIf you are building an embedded app rather than editing a theme, start here. Polaris and the extension targets are where most time gets lost.
11 Build your app's primary user interface embedded in the Shopify admin. If the prompt just mentions `Polaris` and you can't tell based off of the context what API they meant, assume they meant this API.
Best for: Embedded app home pages with Polaris
Shopify 12 Add custom actions and blocks from your app at contextually relevant spots throughout the Shopify Admin. Admin UI Extensions also supports scaffolding new adminextensions using Shopify CLI commands.
Best for: Admin actions and blocks at the right extension points
Shopify 13 Build retail point-of-sale applications using Shopify's POS UI components. These components provide a consistent and familiar interface for POS applications. POS UI Extensions also supports scaffolding new POS extensions using Shopify CLI commands. Keywords: POS, Retail,…
Best for: POS UI extensions for retail workflows
Shopify 14 Build custom functionality that merchants can install at defined points on the Order index, Order status, and Profile pages in customer accounts. Customer Account UI Extensions also supports scaffolding new customer account extensions using Shopify CLI commands.
Best for: Customer account order and profile extensions
ShopifyA single reference skill that points the agent at the current Shopify docs instead of stale blog posts and forum answers.
15 Search Shopify developer documentation across all APIs. Use only when no API-specific skill applies.
Best for: Lookups across Shopify developer documentation
ShopifyA Skill is a reusable instruction pack an agent can load for a specific domain. It usually contains conventions, file patterns and examples, so the agent produces Shopify-shaped code instead of generic React or Liquid guesses.
Yes. Skills are plain instruction files, so any agent host that can read a repository or load a skill folder can use them — Claude Code, Cursor, Codex and custom agents included.
Use a Skill when you want the agent to write or modify Shopify code correctly. Use an MCP server when you want the agent to read or change live store data. For a full workflow you typically connect both.
Some follow official Shopify APIs and docs; others are community-maintained open-source packs. Each FlowCay profile states the source and links to the repository, so you can verify before installing.
Clone or copy the skill folder into your agent’s skills directory, then reference it in the prompt or let the agent discover it automatically. The FlowCay guide on installing a Skill walks through the folder layout.
