Shopify Just Rebuilt Webhooks (and a Lot More) | Eytan Seidman | Spring '26 Editions
Liquid Weekly Podcast: Shopify Developers Talking Shopify DevelopmentShow Notes
Eytan Seidman, VP of Product at Shopify, returns to the Liquid Weekly Podcast for a special Spring '26 Editions walkthrough with Karl and Taylor. It is a full tour of what is dropping for developers: static app home extensions, the App Events API, AI Kit, Sidekick app extensions going GA, the ongoing Dev Dashboard overhaul, a rebuilt logging experience, UCP and agentic commerce, next-gen events replacing webhooks, and the shift from Managed Pricing to Shopify App Pricing. Basically a whole episode of changelog. A must-listen for app developers, agencies, and anyone building on the Shopify platform. 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 Eytan Online LinkedIn: https://www.linkedin.com/in/eytanseidman/ X: https://x.com/eytanseidman See the Spring '26 Editions: https://www.shopify.com/editions/spring2026 Timestamps (00:00) Intro snippets (01:03) Intros and welcoming back Eytan Seidman (02:17) Static app home extensions: building apps fully on Shopify (08:08) App Events API: observability and monitoring in Dev Dash (13:03) AI Kit: store auth, store execute, and how it differs from MCP (17:54) Sidekick app extensions GA: data and app action extensions (25:21) Dev Dashboard overhaul: store and team management (31:34) Logging overhaul: API requests, filtering, and unified logs (35:40) Catalog improvements and the UCP CLI (38:16) Building carts across merchants with UCP (40:35) Agent to agent purchasing and accountability (44:04) Next-gen events: rebuilding webhooks (52:08) Shopify App Pricing: usage-based pricing and meters (58:27) Closing: what Eytan is most excited for devs to try (1:00:50) Picks of the Week Picks of the Week Taylor: A MagSafe power bank. After his recording died in the fourth inning of his daughter's softball game, he picked one up so he can hot-swap batteries mid-game and record full-length games start to finish. https://amzn.to/4vXCZAj Karl: Atkins chocolate truffles, found in the reduced aisle at Kroger. A cheap, high-protein, low-carb sweet that hits the spot if you are doing keto. https://www.kroger.com/p/atkins-endulge-dark-chocolate-truffles/0063748000511 Eytan: Two aviation books. Flying Blind by Dominic Gates, a Seattle Times reporter, on the 737 MAX and the fall of Boeing, tracing the program from the 1960s through the late 2010s: https://www.goodreads.com/book/show/55994102-flying-blind. And The Sporty Game, an older read on the early Boeing vs Airbus competition: https://www.goodreads.com/en/book/show/312480.The_Sporty_Game
More from Liquid Weekly Podcast: Shopify Developers Talking Shopify Development
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.
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-barcodes Create 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-ended Delivery options in Shopify Functions input now expose their metafields: https://shopify.dev/changelog/delivery-options-in-shopify-functions-input-now-expose-their-metafields Prepare 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-configuration New 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-2026-10 Request 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-cookies Georgi: 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/
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.
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.
Episode 073 – I Hid Swag and I'd Do It Again! - Recapping our DotDev Adventure