How a 21 Year Old Builds Shopify Apps With AI Agents

<p>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.</p><p><br></p><p>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.</p><p><br></p><p>▬▬▬▬▬▬▬▬▬▬</p><p><br></p><p>SPONSOR</p><p><br></p><p>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.</p><p><br></p><p>Agencies: one of your clients gets a full year free. Not a trial, a year. https://promoparty.app/agency</p><p><br></p><p>Promo Party Pro - https://promoparty.app/ On the Shopify App Store - https://apps.shopify.com/promo-party-fgwp</p><p><br></p><p>▬▬▬▬▬▬▬▬▬▬</p><p><br></p><p>SUBSCRIBE TO LIQUID WEEKLY</p><p><br></p><p>Don&#39;t miss out on expert insights and tips, subscribe to Liquid Weekly for more content like this: https://liquidweekly.com/</p><p><br></p><p>▬▬▬▬▬▬▬▬▬▬</p><p><br></p><p>FIND CHARLES ONLINE</p><p><br></p><p>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/</p><p><br></p><p>▬▬▬▬▬▬▬▬▬▬</p><p><br></p><p>TIMESTAMPS</p><p><br></p><p>Timestamps generated by AI show notes. These may shift slightly after final edit.</p><p><br></p><p>00:00 – Cold open: the boot disk that broke Dad&#39;s computer</p><p>00:35 – Taylor is in India, so Karl is on his own </p><p>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 </p><p>03:37 – The internship with Scott Austin that turned into a career </p><p>06:29 – The Rutgers full stack certificate, before Claude exist