Yuzu - Stock and Crypto API

Build frontends faster with GraphQL and live price streams👋 Hello Product Hunt fam!

I’m Steve, and I’m excited to announce the launch of Yuzu - the market data API we always wished we had.

🤔 The problem Simply put, there aren't any market data APIs built for rapid app development. The rigid structure of traditional market data APIs requires a lot of up-front work to build up a sufficient dataset before any of the real work can begin.

A little backstory: before Yuzu, we built another product: a consumer-facing portfolio tracking app. This meant we needed to have prices on hand for every stock, crypto, ETF, mutual fund, and option, with history going back 30 years, which was a ton of work! But having the data in our own database exposed us to another class of issue: ongoing data maintenance. Frequent stock splits and ticker symbol changes were a headache and distracted us from focusing on building a great user experience.

We believe that anyone wanting to build with market data should be able to quickly prototype and scale their app to thousands of users without any scraping, data pipelines, or ongoing data maintenance. With that goal in mind, we’re excited to launch Yuzu with our two initial products:

🕸 A robust, high-performance GraphQL API A common use case for investing apps, portfolio trackers and analytical platforms is displaying multiple assets at once and showing their historical performance. With traditional REST APIs, this requires multiple API calls and can be a slow experience for users. The common solution is to cache this data internally for quick client rendering, but this uncorks another problem: managing the daily deluge of stock splits and ticker symbol changes in the market. The last thing you want is your customers waking up to see Converted Organics instead of Coinbase on IPO day (this really happened).

Using GraphQL, you can skip the in-house database and query all the data you need in one API call, directly from your frontend.

Try it out! https://graph.yuzu.dev/graphql

🚿A streaming API for prices, quotes, and aggregates The market changes minute-to-minute, and apps should be engaging, real-time, and responsive to market events. But if your market data API limits you to one websocket connection, it means proxying that connection through your own infrastructure and back out to all your clients, forcing you to take on a massive infrastructural workload. We’re out to change that. Now, you can get live prices in your app in just 5 lines of code. With no limit on the number of connections you can make, you can stream data from Yuzu directly to your app without dealing with the DevOps.

Proof in the pudding👇 curl --no-buffer 'https://sse.yuzu.dev/sse?token=product-hunt&streams=S:T:AAPL,C:T:ETH-USD'

🧑‍💻 Give it a whirl 🎁 Use Demo API Key ‘product-hunt’ to start building now (valid for 3 days). 🔑 Sign up to get your personal key (free forever) and join our beta!

Datasets supported today: - US Stocks, ETFs, mutual funds - Hundreds of Crypto trading pairs - Hundreds of foreign currency rates - More coming soon! Let us know what you want to see.

🤝 Let’s connect! Let us know what you think! We want to learn about what you’re building and what Yuzu can do to support your use case. Hit us up at [email protected] or join our Discord.

📈Up and to the right!