Shopify APIs: Understanding REST vs. GraphQL for Your Custom Store Integrations

Hey there, fellow store owners and tech-savvy entrepreneurs! Let's chat about something that often comes up when we're building custom tools for our Shopify stores: choosing the right API. It can feel a bit like navigating a maze, especially with all the talk about new technologies. We recently had a fantastic discussion pop up in the Shopify Community that really hit home for many, so I wanted to break it down for you.

The Great API Debate: REST vs. GraphQL for Private Apps

Our friend, AlessandroGnola, kicked off a super relevant thread. He's been building private apps using REST APIs with JSON for ages, just like many of us who've worked with platforms like WooCommerce, PrestaShop, or Magento. He noticed Shopify recommending GraphQL, but then saw that REST API versions, like 2026-01, were still available. His big question, and a very valid one, was: "If GraphQL is recommended, why does the REST API 2026-01 still exist? I don't really get it."

Alessandro also made a great point about convenience, especially when integrating with suppliers. REST APIs often feel more straightforward and are widely understood, which can make those external connections smoother.

Here's a snapshot of what he was seeing, which sparked his confusion:

Public vs. Private Apps: The Key Distinction

Our expert community member, tim_1, jumped in with some crucial clarity. This is the core takeaway for anyone building custom integrations:

• GraphQL is required for public apps. These are the apps you find in the Shopify App Store, available to all merchants.
• For private apps, you can keep using REST for now. If you're building a tool just for your store, or a specific client's store, REST is still a perfectly viable option.

This explains why you're still seeing those REST API versions available, even up to 2026-01. Shopify isn't pulling the plug on REST for private apps overnight. They understand that migrations take time and effort, especially for existing systems.

The "REST Sunset" – What Does It Mean for You?

Tim_1 also dropped a gentle warning: "Just be ready to migrate when they announce the REST sunset." This is the long-term view. While REST is fine for private apps today, Shopify's strategic direction is clearly towards GraphQL. Why? GraphQL offers a lot of benefits for developers, like:

• Efficiency: You can request exactly the data you need in a single query, reducing over-fetching and under-fetching of data. This means fewer requests and often faster performance.
• Flexibility: It's easier to evolve APIs without breaking existing clients.
• Strong Typing: GraphQL has a strong type system, which can make development more robust and less prone to errors.

So, while the 2026-01 REST API is there, it's a signal that Shopify is providing a generous transition period. It doesn't mean REST is the future; it means they're supporting existing integrations and giving developers time to adapt.

When to Choose Which for Your Private App

Alessandro clarified his needs: "I need to export orders, create discounts, update stock. Private app." These are common tasks for which REST has traditionally worked well.

Sticking with REST (for now):

• If you have existing private apps built with REST and they're working fine, there's no immediate pressure to switch.
• If your use case is straightforward (like Alessandro's: simple data export, discounts, stock updates) and you're comfortable with REST, it's still a practical choice.
• If you're integrating with third-party systems or suppliers that *only* support REST, then you might not have a choice.

Considering GraphQL (for new private apps or future-proofing):

• If you're starting a brand new private app or planning a significant overhaul, it's a good idea to seriously evaluate GraphQL. It aligns with Shopify's future direction.
• If your app requires complex data fetching, needs to minimize network requests, or demands a highly tailored data structure, GraphQL will likely be more efficient in the long run.
• Getting familiar with GraphQL now will prepare you for the inevitable "REST sunset" that tim_1 mentioned. It's an investment in your app's longevity.

Practical Steps to Navigate Your API Choice:

1. Assess Your Current Setup: If you have existing private apps using REST, document their functionality and dependencies. Understand what a migration would entail.
2. Evaluate New Projects: For any new custom development, consider GraphQL first. Look at the Shopify Admin API for GraphQL to see if it meets your needs efficiently.
3. Stay Informed: Keep an eye on Shopify's developer announcements. They'll provide ample notice before any major API deprecations.
4. Test and Learn: If you're new to GraphQL, start with small proof-of-concept projects. It has a learning curve, but the benefits can be significant.

Ultimately, Shopify is giving developers options, but also guiding them towards what they see as the more powerful and efficient future for API interactions. For private apps, you've got flexibility today, but keeping an eye on the horizon and understanding the benefits of GraphQL will serve you well in the long run. It's about making an informed decision that balances immediate convenience with future resilience for your store's custom integrations.