How to Add an Item to an Order Using Shopify Flow + GraphQL Admin API

Video Description

👨‍🎓 Become a Paid Shopify Developer → Join the Bootcamp https://codingwithjan.com/bootcamp?src=flow-welcome-gift 👨‍💻 Shopify App Development Training → Waitlist https://www.codingwithjan.com/app-development?src=flow-welcome-gift 🔧 Need Help With Your Store? → Shopify Development Services https://www.codingwithjan.com/work-together?src=flow-welcome-gift 💫 Developer Opportunities → Get Notified About Jobs & Updates https://www.codingwithjan.com/shopify-opportunties?src=flow-welcome-gift 🎬 About this Video In this video, you’ll learn how to automatically add a free gift to an existing order using Shopify Flow + the GraphQL Admin API — without apps or monthly fees. Perfect real-world example to understand how GraphQL requests work inside Flow. ⏳ Timestamps 00:00 Today's Video 00:40 Building Our Solution 11:30 Debugging Strategy 12:00 Outro 🔎 Seo Description In this Shopify developer tutorial, I’ll show you how to add an item to an existing order using Shopify Flow and the GraphQL Admin API. We’ll build a real example where a free welcome gift is automatically added to a customer’s first order — without using any third-party apps. You’ll learn why Shopify always requires a variant ID (not a product ID), how to find it, and how to use it in a GraphQL Admin API mutation inside Shopify Flow. This is a practical, no-fluff example of Shopify automation that you can adapt for free gifts, custom items, or internal workflows. This approach is ideal if you want a free, native Shopify solution for adding line items to orders while also learning how Shopify Flow and GraphQL work together. Perfect for Shopify developers who want to go beyond basic Flow triggers and start using real API logic. 🔥Bonuses: 🚀Free Pagespeed Optimization Course https://www.codingwithjan.com/shopify-resources 🤝 Connect on LinkedIn: https://www.linkedin.com/in/jan-frey/ 📧Contact: https://codingwithjan.com 🎥 PS. I just started a second channel for deeper Shopify insights & market analysis. https://www.youtube.com/@CodingwithJanUnscripted/videos 📗Further Resources: Shopify Flow Tutorial Shopify https://www.youtube.com/watch?v=klWLZq7bivE