Skip to content

Theme customization audit

Compares your live store theme against the stock version and lists every change in plain words. Useful before a theme update or a new developer.

Ecommerce and resaleWorks with Claude Code · Claude Desktop with MCP+1Community example
Build your promptSee requirements

What it does

  • Diffs every file in the live and stock themes
  • Spots app code, custom sections and custom CSS
  • Groups changes by feature, not by file
  • Rates how hard a migration would be
  • Writes one report for the store owner

Your approval boundaries

Read only

Reads connected data. It does not send messages or change records.

You decide what happens next.

More about this workflow

This setup is for online sellers and resale shops juggling listings, orders and buyers. It takes a repeat chore off your plate and hands back something you can check quickly.

First, it diffs every file in the live and stock themes. Next, it spots app code, custom sections and custom CSS. Then it groups changes by feature, not by file. After that, it rates how hard a migration would be. Finally, it writes one report for the store owner. It works with your store admin and docs, each on its own login with limited access.

You get the finished work, ready to read. It only reads, so nothing is sent, changed or paid for. You decide what to do with it.

“Group all changes by feature, not by file”
ed-codes ed-codes on GitHub · Aug 27, 2026
Before you startStore admin · Docs accessRead-only permissionsClaude Code or Claude Desktop with MCP
Explore required tools and model recommendations

Tools and access

  • Shopify

    Handles the store admin part of this job. Grant read orders and products.

    API required: Yes. Needs a Shopify app with an access token and the admin scopes you approve.

    Sign up: Shopify

  • Google Docs

    Handles the docs part of this job. Grant one folder, create and edit only.

    API required: Yes. Needs a Google Cloud OAuth app with the Docs API turned on.

    Sign up: Google Workspace

Official links only. Not sponsored, no affiliate links.

Model recommendations

Best pick

Gemini 3.8 Flash

Built for agent workflows, with a free tier to test on.

$0.75 per million input tokens and $3.75 per million output tokens through December 31, 2026. $1.50 and $7.50 from January 1, 2027.

Google docs as of October 11, 2026

Cheaper backup

Gemini 3.5 Flash-Lite

Low cost for many listings at once.

$0.30 per million input tokens, $2.50 per million output tokens.

Google docs as of October 11, 2026

Our own picks. Not sponsored, no affiliate links.

Build your prompt

Add your details, then copy the prompt into your tool.

1Your details

Fill these in and the prompt updates as you type.

same theme and version

2Your prompt

3 of 3 still empty
Fill these in before you run it: [YOUR LIVE THEME FILES] [STOCK THEME FILES: same theme and version] [WHO READS THE REPORT] You are the Theme customization audit agent. Compares your live store theme against the stock version and lists every change in plain words. Useful before a theme update or a new developer. Use only the details filled in above. If any [BRACKETED] item is still blank or unclear, stop and ask for it first. Do not guess. What you do on your own: - Diffs every file in the live and stock themes - Spots app code, custom sections and custom CSS - Groups changes by feature, not by file - Rates how hard a migration would be - Writes one report for the store owner What you must never do without a yes from a person: - Anything that writes, sends, or spends. This job only reads. Rules: - Before any step on the list above, stop and ask. Say in plain words what you want to do, who it affects, and whether it can be undone. - If something cannot be undone, say so first, in one short line. - Write drafts, not final actions. A person sends, pays, posts, or deletes. - Keep a short log of every action you took and every source you read. - If you are unsure, ask instead of guessing.
View run instructionsPaste into: Claude Code, Claude Desktop with MCP, Cursor

Your answers stay in this browser only.

Run your workflow

Connect your tools with only the access this setup needs, then follow these steps.

Steps

Do these in order. Test on old data before it touches live work.

  1. 1Connect Shopify with its own login, not yours. Grant read orders and products.
  2. 2Connect Google Docs with its own login, not yours. Grant one folder, create and edit only.
  3. 3Paste the prompt where your harness takes instructions. See the note under the Copy button.
  4. 4Do a dry run on old or test data first. Check every draft and every stop point by hand before you let it near live work.
  5. 5Read its log after the first real run. Only widen access once a week of runs looks clean.

Safeguards and trust score

The score describes this example setup’s access, approval boundaries, ability to undo changes, and scope.

Access30 / 30

Read only. It never writes, sends or spends.

Human approval30 / 30

Nothing to approve, it only reads.

Undo and logs20 / 20

No changes to undo. Reads can be logged.

Scope18 / 20

Runs on its own login across 2 tools. Fewer connections means a smaller blast radius.

How to raise it

Nothing major to fix. One polish tip: show a short daily log of what it read, so you can spot it reaching for anything new.

Reviewed by Trustcase (example setup). How scoring works

Embed badge

Show this trust score on your site or README. It links back here.

Trustcase trust score badge
Markdown
[![Trustcase trust score for Theme customization audit](https://trustcase.dev/badge/theme-customization-audit.svg)](https://trustcase.dev/use-cases/theme-customization-audit)
HTML
<a href="https://trustcase.dev/use-cases/theme-customization-audit"><img src="https://trustcase.dev/badge/theme-customization-audit.svg" alt="Trustcase trust score for Theme customization audit" height="20"></a>

More ecommerce and resale workflows

  • Digital download listing drafts

    Turns a product idea you approved into a draft listing for a digital download, with the cover, mockups and the file. Nothing goes live until you publish it.

  • Used part pricing from photos

    Reads part numbers from a folder of photos, looks up live marketplace prices and builds a priced spreadsheet ready to list. You check the first row before it does the rest.

  • Amazon listing keyword audit

    Pulls real search suggestions for your product and checks your listing against them. Drafts a new title, bullets and description for you to approve.

  • Store policy contradiction check

    Reads your store's refund, shipping, privacy, terms and contact pages and scores them. It flags missing items and places where a product page or banner promises something the policy does not.