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Liquid Weekly Podcast: Shopify Developers Talking Shopify Development

Liquid Weekly Podcast: Shopify Developers Talking Shopify Development

Karl Meisterheim

Each episode hosts Karl and Taylor discuss the latest news and techniques for Shopify development. Hear about current projects, listen to interviews with developers and take your theme and app development skills to another level.

84 - Episode 078 - Smarter Tests, Not More Tests with Nick Selman of Shoplift
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  • 84 - Episode 078 - Smarter Tests, Not More Tests with Nick Selman of Shoplift

    Nick Selman, who leads growth at Shoplift, joins Karl and Taylor to talk about conversion rate optimization built specifically for Shopify.

    Shoplift is the first Shopify Plus certified CRO platform, and Nick gets into why a Shopify-native tool beats general-purpose testing (no flicker, tests at the Liquid level, served through Shopify), how to think about Rollouts as a floor rather than a threat, why most CRO is stuck in hundred-year-old orthodoxy, and what non-BFCM brands should actually do during the busiest season. Plus the "technical-ish" era of marketing, the biggest mistakes brands and agencies make with testing, the Dev Changelog, and Picks of the Week.

    Sponsor
    The Support Heroes: https://www.thesupportheroes.com/

    Subscribe to Liquid Weekly
    Don't miss out on expert insights and tips. Subscribe to Liquid Weekly for more content like this: https://liquidweekly.com/

    Find Nick Online

    Shoplift: shoplift.aiLinkedIn: linkedin.com/in/nickselmanTwitter/X: x.com/nickselmanEmail nick@shoplift.ai for a free conversion rate audit

    Timestamps

    (00:00) Open(00:35) Intros and Taylor's trip(02:07) Meet Nick Selman of Shoplift(04:55) Nick's origin story: from a coffee dropshipping startup to Shoplift(09:05) The "technical-ish" era for marketers and founders(15:59) Why a Shopify-native CRO tool beats general-purpose testing(20:30) Rollouts as the floor, not a threat to the app ecosystem(30:10) Going all in on Shopify and rethinking century-old CRO(34:10) What non-BFCM brands should do during BFCM(37:17) Who actually benefits from A/B testing, and the "do no harm" test(44:02) Biggest mistakes brands and agencies make with CRO(49:13) Dev Changelog(52:13) Picks of the Week

    Dev Changelog

    Build with confidence: Shopify AI Toolkit's security check: https://shopify.dev/changelog/blog/build-more-secure-apps-with-shopify-s-ai-toolkit-security-checkCheckout footer visibility now applies to merchant-configurable content: https://shopify.dev/changelog/posts/checkout-footer-visibility-now-applies-to-merchant-configurable-contentAdd shopping and Shop Pay checkout to any agent with Shop MCP: https://shopify.dev/changelog/posts/add-shopping-and-shop-pay-checkout-to-any-agent-with-shop-mcp[deprecation] Global Catalog REST API stops serving traffic on November 2, 2026: https://shopify.dev/changelog/posts/global-catalog-rest-api-stops-serving-traffic-on-november-2-2026[action required] New owner_type field for metafield declarations in Checkout and Customer Account UI extensions, required in 2027-01: https://shopify.dev/changelog/posts/metafield-owner-types-required-for-checkout-and-customer-account-ui-extensions[breaking change][action required] Cart mutations reject unconfirmed writes in POS UI extensions 2026-10: https://shopify.dev/changelog/posts/cart-mutations-reject-unconfirmed-writes-in-pos-ui-extensions-2026-10[breaking change][action required] POS UI extensions now return percentage values for percentage discounts: https://shopify.dev/changelog/posts/pos-ui-extensions-now-return-percentage-values-for-percentage-discounts

    Picks of the Week

    Karl: The Deerslayer by James Fenimore Cooper. The first book chronologically in the Leatherstocking Tales (the Last of the Mohicans series), feeding his current frontier-life kick.Nick: Hestan NanoBond pans. Titanium-coated stainless steel, durable, dishwasher safe, and worth waiting for a sale on.Taylor: A Kindle, plus the Libby app for free library books. His travel lifesaver on 20-plus-hour flights, and currently loaded with the Game of Thrones series.
    Thu, 29 Oct 2026 - 59min
  • 83 - How a 21 Year Old Builds Shopify Apps With AI Agents

    Taylor is in India for Shop Quest, so Karl flies solo with Charles Swayne, owner and app developer at JadePuma Apps and the person behind Datify. Charles is 21, learned Python in sixth grade, and now runs a multi-agent development workflow that researches, plans, audits the plan, executes, and tests itself before he ever looks at the code.


    We get into what that workflow actually looks like, which models he reaches for at each step and why, how he runs his own evals, and whether any of us should still be reading the PR. Plus Datify, structuring product data for agentic commerce, and what it was like when Mantle shut down.


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    SPONSOR


    Promo Party Pro is a free gift with purchase app Karl helped build with the team at Ethercycle. Set a spend threshold, show shoppers how close they are to earning a gift, and let the app handle the rest. Discount Functions under the hood, one app embed, no theme surgery, and campaigns auto-pause when the gift sells out.


    Agencies: one of your clients gets a full year free. Not a trial, a year. https://promoparty.app/agency


    Promo Party Pro - https://promoparty.app/ On the Shopify App Store - https://apps.shopify.com/promo-party-fgwp


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    SUBSCRIBE TO LIQUID WEEKLY


    Don't miss out on expert insights and tips, subscribe to Liquid Weekly for more content like this: https://liquidweekly.com/


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    FIND CHARLES ONLINE


    LinkedIn - https://www.linkedin.com/in/charles-swayne/ Datify on the Shopify App Store - https://apps.shopify.com/datify JadePuma Apps on the Shopify App Store - https://apps.shopify.com/partners/jadepuma-apps JadePuma - https://jadepuma.com/ BBQ on Ingraham, his neighborhood potluck - https://bbq-on-ingraham.onrender.com/


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    TIMESTAMPS


    Timestamps generated by AI show notes. These may shift slightly after final edit.


    00:00 – Cold open: the boot disk that broke Dad's computer

    00:35 – Taylor is in India, so Karl is on his own

    01:17 – Meeting at the water cooler, which was really the Diet Coke 02:50 – Python in sixth grade and a choose your own adventure ham sandwich

    03:37 – The internship with Scott Austin that turned into a career

    06:29 – The Rutgers full stack certificate, before Claude existed

    07:55 – How JadePuma Apps turns one client's problem into an app

    08:47 – Admin extensions and printing jukebox strips from an order

    09:45 – Tech stack, Heroku, Vercel, and the fear of picking the next Heroku

    11:48 – When Mantle shut down

    14:56 – Sponsor: Promo Party Pro

    16:10 – What Datify does, and the merchant with 700,000 products

    19:05 – Seven apps, two Built for Shopify, and figuring out pricing

    20:59 – The agentic workflow: research, plan, audit, execute, test, review

    22:00 – The plan reviewer skill, and why the plan matters more than the code

    24:25 – Subagent phases and picking a model for each one

    27:16 – Running your own evals: same prompt, two models, fifty times

    28:30 – Screenshots, phone notifications, and automated test reports

    29:57 – Hallucinations, scheming, and the Haiku that switched to Russian

    33:41 – Do you read the PR? Every AI feature ships with a security bug

    36:23 – When the review loop never ends and you wonder if you should have done it yourself

    41:08 – Missing the grunt work, and grieving it together

    43:09 – From DOS 5 to agents, what we gained and what we lost

    44:44 – The SimCity theory of programming with agents

    47:00 – Dev Changelog

    49:15 – Picks of the Week


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    PICKS OF THE WEEK


    Karl: When Life Gives You Pears by Jeannie Gaffigan - https://www.amazon.com/dp/1538751046 – Her account of having a brain tumor removed, her family, and her faith. Not Karl's usual read, and it stuck with him.


    Charles: Keyviz - https://keyviz.org/ – A widget that shows your last ten keystrokes, so when you fat-finger a shortcut you can see what you just did and undo it.

    Thu, 15 Oct 2026 - 54min
  • 82 - Episode 076 - Making Storefronts Faster One Device at a Time with Georgi Petrov of Uxify

    Georgi Petrov, CEO and co-founder of Uxify, joins Karl and Taylor to talk about the half of web performance nobody optimizes for: the shopper's device. After building SMS Bump (acquired by Yotpo), ConsentMo, and NitroPack (acquired by WP Engine), Georgi is now tackling device-specific friction, the laggy buttons, layout shifts, and interaction delays that vary wildly from one phone to the next. We get into how Uxify profiles a visitor's capability without touching your code, the specialized agents that fix problems on the fly, the ClickHouse-powered data layer behind it all, and how to think about performance heading into BFCM. Plus the Dev Changelog and Picks of the Week.

    Sponsor
    The Support Heroes: https://www.thesupportheroes.com/

    Subscribe to Liquid Weekly
    Don't miss out on expert insights and tips. Subscribe to Liquid Weekly for more content like this: https://liquidweekly.com/

    Find Georgi Online

    Uxify: https://uxify.com/integrations/shopify/LinkedIn: https://www.linkedin.com/in/georgipetrov/

    Timestamps

    (00:00) Open(00:29) Intros(02:11) Meet Georgi Petrov of Uxify(02:54) Origin story: hardware hacking to his first software(06:03) Finding Shopify: SMS Bump, ConsentMo, and NitroPack(12:23) Making fast decisions and failing cheaply(15:32) Why Uxify: performance is half website, half device(20:11) How it works: profiling devices and adapting on the fly(26:17) Sitting alongside your theme without touching your code(28:26) Real user monitoring and specialized agents(37:47) The tech stack: ClickHouse and heavy browser testing(41:57) Shopify cart variations and a clever checkout fallback(46:24) Prepping for BFCM and who Uxify is for(51:14) Dev Changelog(58:22) Picks of the Week

    Dev Changelog

    [action required] Variants now support multiple barcodes: https://shopify.dev/changelog/product-variant-barcode-is-being-replaced-by-barcodesCreate and delete dev stores in Shopify CLI: https://shopify.dev/changelog/create-and-delete-dev-stores-in-shopify-cli[action required] Discounts Allocator Function API developer preview has ended: https://shopify.dev/changelog/discounts-allocator-function-api-developer-preview-has-endedDelivery options in Shopify Functions input now expose their metafields: https://shopify.dev/changelog/delivery-options-in-shopify-functions-input-now-expose-their-metafieldsPrepare your app for the Shopify admin's new look: https://shopify.dev/changelog/prepare-your-app-for-the-shopify-admins-new-look[action required] Updates to Events payloads and subscription configuration: https://shopify.dev/changelog/updates-to-events-payloads-and-subscription-configurationNew Pricing audit trail for contextual product variant prices: https://shopify.dev/changelog/pricing-audit-trail-for-contextual-product-variant-prices[breaking api change] [action required] Removed session.currentSession.staffMemberId from POS UI Extensions (2026-10): https://shopify.dev/changelog/removed-session-currentsession-staffmemberid-from-pos-ui-extensions-2026-10Request a bundle size exception for existing UI extensions: https://shopify.dev/changelog/request-a-bundle-size-exception-for-existing-ui-extensions

    Picks of the Week

    Karl: Keto Oreo-style sandwich cookies (about 50 calories each), part of his ongoing tour through packaged keto snacks: https://www.choczero.com/products/keto-sandwich-cookiesGeorgi: Calisthenics between AI prompts. Knocking out push-ups and squats while waiting on an agent, which he says burns the time well and sharpens his focus when he comes back.Taylor: Ted Lasso, season 4 on Apple TV+. Still, in his words, one of the most wholesome shows around: https://www.imdb.com/title/tt10986410/
    Thu, 01 Oct 2026 - 1h 03min
  • 81 - Shop Quest 2026: Inside India's Shopify Developer Event

    Prakhar Shrivastava of FoxSell joins Karl and Taylor to talk about Shop Quest, the Shopify community event he and his team run in Bengaluru, and to prep Taylor for his first trip to India.


    Along the way Prakhar breaks down India's Shopify ecosystem, from the app companies pulling serious revenue to the agencies quietly white-labeling builds for Platinum partners in the US and Europe, and makes the case for why the Shopify partner community needs its own events at all.


    SPONSOR

    Promo Party Pro is a free gift with purchase app Karl helped build with the team at Ethercycle. Out of the box it gives you campaigns built to increase AOV and conversion: set a spend threshold, show shoppers how close they are to earning a gift, and let the app handle the rest. Discount Functions under the hood, one app embed, no theme surgery, and campaigns auto-pause when the gift sells out.

    Agency offer: one of your clients gets a full year free. Not a trial, a year.

    Promo Party Pro
    On the Shopify App Store


    SUBSCRIBE TO LIQUID WEEKLY

    Don't miss out on expert insights and tips, subscribe to Liquid Weekly for more content like this.


    FIND PRAKHAR ONLINE

    LinkedInXFoxSellFoxSell Bundles Plus on the Shopify App StoreBook time with PrakharShop Quest


    TIMESTAMPS

    00:00 – Cold open: apologizing in advance for name pronunciation
    00:25 – Karl sends Taylor on a quest, Prakhar joins
    06:51 – What FoxSell does and why complex bundles
    08:17 – The origin of Shop Quest: a 30 person dinner that kept growing
    10:24 – From 150 attendees to 400, and why people started flying in
    19:24 – Visas, arrival, and getting picked up at the airport
    21:15 – Don't eat from the street, don't drink the tap water
    22:33 – There is no tipping culture in India
    25:26 – Haggling in street markets, and how badly you'll get quoted
    27:14 – India's Shopify ecosystem: merchants, apps, and agencies
    29:13 – The white-label agency work nobody talks about
    31:51 – Why the Shopify partner community is a lonely place to be
    33:15 – Shop Quest format: fewer talks, more networking, more business content
    37:13 – Talks recorded in 4K, plus an MCP server for the event
    41:15 – Name tags, phonetic spellings, and why Adi shortened his name
    46:43 – Taylor's travel prep: lounges, overnight flights, and vaccinations
    48:27 – Print your visa confirmation before you fly
    50:20 – Swym's office is across the street from the venue
    53:06 – South Indian food, and why Prakhar and Adi speak English to each other
    56:07 – Dev Changelog
    1:00:46 – Picks of the Week


    DEV CHANGELOG

    GitHub commits now name the last theme editor. Official PHP and Python packages for building appsFour new Events topics⚠️ As of October 1, theme commands against password protected storefronts need CLI 3.84 or later.More resilient refreshes for expiring offline access tokensThe Polaris CDN is adopting semantic versioning


    PICKS OF THE WEEK

    Karl: A Diet Coke coaster, courtesy of his sister Heather. "I'd like a Diet Coke please." "Is Diet Pepsi okay?" "Is monopoly money okay?"Karl: Umland's Crunchy Cheese – A Carlock, Illinois company that vacuum-dries cheese below its melting point to make it light, airy, and crunchy. Karl has not tried it yet but picked it anyway.Prakhar: DJI Osmo Pocket 3 – What he uses to record every event he attends, including Shop Quest.Taylor: Omarchy – DHH's opinionated Arch and Hyprland Linux distro. Taylor put it on a 2012 MacBook and brought the thing back to life, battery included, and it handles the Shopify CLI and agents fine.


    BONUS

    See all that Bengaluru has to offer at sda.guide.

    Thu, 17 Sep 2026 - 1h 06min
  • 80 - 074 - Shopify App Analytics with Alexander Hupfer: Churn, LTV & MRR

    In this episode of the Liquid Weekly Podcast, hosts Karl Meisterheim and Taylor Page are joined by Alexander Hupfer, founder of Fusion Metrics and a solo Shopify app developer.


    The conversation digs deep into the current state of Shopify app analytics following Mantle's shutdown, why certain metrics are far more subjective than they appear, and how AI agents are changing the way developers query their own data.


    Sponsor - The Support Heroes


    STAY CONNECTED

    Subscribe to Liquid Weekly for more expert insights: https://liquidweekly.com/


    EPISODE HIGHLIGHTS

    - Alexander's Origin Story

    - Why Shopify Doesn't Build This

    - The Mantle Shutdown

    - Metrics That Aren't Black and White

    - Installs as a Vanity Metric

    - AI Agents + Analytics: Using MCP servers and agents like Claude Code and Codex to write SQL queries

    - Build vs. Buy vs. Self-Host


    ABOUT ALEXANDER HUPFER

    Alexander is the founder of Fusionmetrics, an analytics platform built specifically for Shopify apps. Coming from a theoretical physics background, he moved into the analytics space in 2022 and pioneered install attribution by linking Google Analytics events with Partner API data.


    FIND ALEXANDER ONLINE & RESOURCES

    - Fusion Metrics: https://fusionmetrics.com/

    - Alexander's Twitter/X: https://x.com/alexanderhupfer

    - PartnerMetrics by Björn Forsberg (open source): https://github.com/forsbergplustwo/partner-metrics

    - Matt De Sousa / Blair (ex-Mantle) conversation on attribution: https://orange-aphid-848.notion.site/Live-with-Blair-Beckwith-Shopify-Mantle-Growth-the-Future-of-Shopify-Apps-3c15075fb6d680a5bd14d8ec230430e4

    - Alexander's talk from last year's Mantle event on churn modeling: https://youtu.be/9g7N7VdHfWU?si=48yb1k9xM6sb9VwX

    - Darius's Dev Dashboard revamp screenshots: https://x.com/darius_gai/status/2087916085794283800?s=20

    - Alexander on Ilias' Podcast talking analytics: https://youtu.be/eC8i9ex6xnQ?si=97o59ZK31c-SfCgf


    TIMESTAMPS

    00:00 - Cold open: The mask-selling business

    00:30 - Introduction & the bat/rabies saga

    02:20 - Alexander's origin story: COVID masks to Shopify apps

    06:42 - Moving into analytics & the physics background

    11:03 - Current state of Shopify app metrics & the Mantle shutdown

    13:49 - Why Shopify doesn't provide revenue analytics (the ROI question)

    16:43 - The Dev Dashboard revamp & transaction vs. MRR

    21:57 - Reconstructing MRR from the Partner API event stream

    25:11 - Installs as a vanity metric & search ranking

    27:28 - Churn and LTV: the most complicated metrics

    34:11 - App acquisition & assessing performance objectively

    36:40 - The three Rs: Acquisition, Retention, Revenue

    37:06 - Attribution & app store conversion rates

    38:28 - Using AI agents & MCP to query analytics

    43:01 - GA4 attribution on the App Store vs. storefront

    45:31 - App Store optimization & keyword-stuffed titles

    48:17 - Build vs. Buy vs. Self-Host

    53:17 - Picks of the Week

    56:35 - Dev Changelog


    DEV CHANGELOG

    - Oxygen is now available on development stores: https://shopify.dev/changelog/oxygen-is-now-available-on-development-stores

    - WebMCP support for Liquid and Hydrogen storefronts: https://shopify.dev/changelog/webmcp-liquid-hydrogen

    - Standard storefront events and actions now support cart attributes: https://shopify.dev/changelog/events-and-actions-cart-attributes-support

    - Hydrogen developer preview update, August 18, 2026: https://shopify.dev/changelog/hydrogen-developer-preview-update-august-18-2026

    - App intents on admin.app.intent.link now open as a full-page navigation: https://shopify.dev/changelog/app-intents-on-admin-app-intent-link-now-open-as-a-full-page-navigation


    PICKS OF THE WEEK

    - Karl: "Star City" on Apple TV — a sister show to "For All Mankind" exploring an alternate history where Russia reached the moon first

    - Alexander: "The Capitalist Manifesto" by Johan Norberg

    - Taylor: "Project Hail Mary" (the movie) — looking forward to reading the book next

    Thu, 03 Sep 2026 - 1h 01min
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