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shopify-polaris-checkout-extensions

Create custom checkout UI extensions for Shopify using the Shopify CLI.

491|60|Updated Apr 1, 2026
Search Tags:#cli#scaffold#extensions#checkout#shopify#polaris#ui-extensions
One-click install
npx skills add https://github.com/Shopify/Shopify-AI-Toolkit --skill shopify-polaris-checkout-extensions
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: shopify-polaris-checkout-extensions
Source: https://github.com/Shopify/Shopify-AI-Toolkit/tree/main/skills/shopify-polaris-checkout-extensions
Command: npx skills add https://github.com/Shopify/Shopify-AI-Toolkit --skill shopify-polaris-checkout-extensions

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Merchants need to tailor the checkout experience with custom UI elements and flows, but building, maintaining, and validating these extensions can be complex without a guided framework.

Core Features & Use Cases

  • Create custom checkout UI extensions to display product information, shipping options, payment methods, order summaries, and Shop Pay interactions.
  • Scaffold and validate new checkout extensions using the Shopify CLI, ensuring alignment with the Polaris Checkout Extensions framework and supported APIs.
  • Integrate with Shopify documentation and API schemas to accelerate development and ensure compatibility across Commerce flows.

Quick Start

Scaffold a new checkout UI extension with the Shopify CLI using the template checkout_ui and the name my-checkout-ui-extension.

Frequently Asked Questions about shopify-polaris-checkout-extensions

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create custom checkout UI extensions for Shopify?▼

You can create custom checkout UI extensions by using the Shopify CLI to scaffold a new extension. This process automates the setup and ensures your custom UI elements for product information, shipping, and payment are properly configured for deployment.

Where can I add custom Polaris UI elements in the Shopify checkout flow?▼

Custom Polaris UI elements can be installed at defined points in the checkout flow, including product information, shipping, payment, and order summary sections. They also support tailored checkout experiences and Shop Pay interactions.

Does the Shopify CLI scaffold and validate checkout extensions automatically?▼

The Shopify CLI automates scaffolding of new checkout extensions and enforces compatibility with Polaris Checkout Extensions targets and APIs. It requires properly formatted frontmatter and validated code to ensure successful deployment.

What is required to deploy custom Shopify checkout extensions?▼

Deploying custom Shopify checkout extensions requires properly formatted frontmatter and validated code that is compatible with Polaris Checkout Extensions targets and APIs. The Shopify CLI helps enforce these compatibility requirements during development.

Can I use Polaris checkout extensions for Shop Pay interactions?▼

Yes, you can build custom checkout UI extensions that include Shop Pay interactions. This allows merchants to tailor the checkout experience with custom UI elements and flows within the Shop Pay environment.

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