Every sports card price tracker starts with the same unglamorous problem: getting clean card data. Before you can chart what a rookie card did over the last six months, you need to know that the card exists, which set it belongs to, which player is on it, and which parallel or variation you're actually looking at.

That identity layer is what a sports card API gives you, and it's the part most people underestimate when they start scraping marketplace listings instead.

When I first built the Trading Card API, I chose OAuth 2.0 with Laravel Passport. It gave us enterprise-grade security and flexibility from day one.

After using the API on my own projects, I've realized that while OAuth is perfect for some use cases, many developers would benefit from the simplicity of API keys for others. Here's why we're adding both options.

Released September 6, 2025

We're excited to announce the release of Trading Card API v0.4.0, our most significant update yet. This release marks a major milestone in our journey toward providing enterprise-grade trading card data infrastructure, with intelligent rate limiting, comprehensive usage analytics, and a streamlined developer experience.

We're excited to introduce Trading Card API - the most comprehensive and developer-friendly source of trading card data available today. Whether you're building a card collection app, a marketplace platform, or an analytics dashboard, our API provides the rich, accurate data you need to create amazing experiences.