Migrate Shopify Scripts to Functions and Restore Your Checkout Logic (Claude Cowork Self-Install Kit)

Rebuild your discount, shipping, and payment logic in Shopify Functions so checkout stops silently mispricing orders.

Your discounts and shipping rules ran on Shopify Scripts, and Scripts stopped executing on June 30, so checkout is quietly pricing orders with that logic missing. You know you should have moved already, and you're not sure where to start rebuilding it.

That's the leak. It isn't effort; the promo and shipping logic your checkout depends on is no longer running, and nothing in your admin tells you so.

What this kit does

You scope your existing Script logic (discounts, shipping-rate rules, payment-method customizations), rebuild it as Shopify Functions inside a custom app, test it on a development store so behavior matches the old setup exactly, and push to production so promos and shipping discounts work again. Shopify Scripts stopped executing on June 30, 2026 with no grace period, so this is the remediation that puts checkout back where it should be.

What you can expect

Discount, shipping, and payment rules rebuilt and running again on Functions, behavior matched against your pre-cutoff baseline, and the mis-priced orders and lost shipping-discount eligibility stopped at the source.

Who it's for

Built for Shopify store owners and the agencies that run their stores, especially anyone whose checkout still depends on legacy Scripts. This is a self-install kit you run yourself with your own AI agent, built for Claude Cowork first.

What's included

Skip building from scratch. No coding. You get the complete kit your own AI agent reads, sets up, and runs for you, step by step:

• A Start Here guide, so you know exactly what to open first
• The agent install instructions, the part that lets your own AI agent stand the workflow up for you
• A guided setup that interviews you about your business, so the workflow fits how you actually work
• Workflow Briefing: the plan, the inputs, and what done looks like
• Task List your agent follows to build it
• MCP Connection Guide for the tools involved
• Tool Setup notes for accounts, keys, and permissions
• Prompt Library, including the ready-to-run prompt for this workflow
• Troubleshooting and maintenance guide for the common snags
• A Next Steps and Roadmap, so you know what to automate next once this one is running
• A Run Guide you keep, so you can run it any time with no setup again

This is recovery work, and it has a price attached to every day it waits. Every order that checks out with the wrong discount or the wrong shipping rate is margin you don't get back.

What you'll need (not included)

This kit is the workflow, the prompts, and the setup guide. You bring your Shopify store with custom app access for Functions, billed by Shopify, plus a development or staging store to test against.

You'll also need your Claude account on Cowork's Pro plan or higher, so your agent can connect your tools and use the most capable model while it installs the workflow.

Not on Claude? The kit is plain files that describe what to achieve rather than which buttons to press, so a capable AI agent on another platform, like ChatGPT Work, can follow the same steps. If anything doesn't map to your setup, email support and we'll get you working.

How to install this kit

Connect Shopify at claude.com/connectors and authorize your store. Open the kit in Claude Cowork and run the included prompt. Step-by-step instructions ship inside every kit, so you're never guessing.

See How Self-Install Kits Work for the full walkthrough.

Install once, not every month

A Shopify Scripts migration agency bills you by the project for a rebuild you can run yourself. If you've been pricing one, this is the install-it-once alternative: an automation kit, blueprint, and workflow template you set up once and keep. Add it to your cart, open it in Claude Cowork, and get your checkout logic running again.