Yuzu – The Stock and Crypto GraphQL/Streaming API for Rapid Development
Hey HN! Excited to show off Yuzu, the stock market and Crypto API we wish we always had. We built Yuzu to solve a problem we had while working on a prior project: current market data APIs are not built to enable rapid prototyping and scaling without a significant amount of upfront data engineering. In our previous app, a portfolio tracker, we had to ingest 30 years of historical data for stocks, crypto, ETFs, and mutual funds just so that we could re-expose that data to our frontend in a more efficient way. The number of API calls we would have had to make otherwise have made the app…
What it does
In the maker’s words, at launch
Hey HN! Excited to show off Yuzu, the stock market and Crypto API we wish we always had. We built Yuzu to solve a problem we had while working on a prior project: current market data APIs are not built to enable rapid prototyping and scaling without a significant amount of upfront data engineering. In our previous app, a portfolio tracker, we had to ingest 30 years of historical data for stocks, crypto, ETFs, and mutual funds just so that we could re-expose that data to our frontend in a more efficient way. The number of API calls we would have had to make otherwise have made the app unusably slow. This is why we built Yuzu to power frontend fintech use cases with a first-ever GraphQL API and unlimited streaming connections for live price data. We believe that you should be able to prototype and launch your app in days instead of weeks without building up your own data warehouse of market data. Just one API call to fetch everything you need and you're off to the races. The API is live now - use the code "demo" to try it out and sign up to get your own free API key for personal use. We're excited to show this off to the HN community - excited to hear your feedback
Does the same job
all alternatives →




- AAAn API to store balances and transactions2020 · ▲151
Hey everyone! I'm Rob and I want to share what I've built - a solid ledger behind simple API: https://decimals.app The ledger is a key piece of any financial system and is easy to get the design wrong, resulting in troubles for making sure money movements are adding up. I took a lot of inspiration from good designs from Square, Uber, and others for the scalability and security aspects. And on the usability side, I applied many concepts from the Ledger CLI, making it very easy to use. I'm really happy I get to show this to you all, thank you for reading about it! Please let me know…
More dev tools this month
the category →



Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com

Launched alongside, June 2022
the whole month →- AF
I've seen some interests in (simulation) video games here on HN so I thought I'd share a short version of our story. More than 6 years ago, me and my friend from university were playing around with an idea of making a game we always wanted to play. We worked on it on weekends but the progress was quite slow, especially due to so many dead ends and wasted effort. Eventually however, we solidified our direction and decided to take the risk to resign from our well paid SWE jobs and work on it full time. It took more than a year but yesterday we have finally released it on Steam:…
Life & fun · 2022
- AC
Life & fun · 2022 · benoitessiambre.com
- IS
Life & fun · 2022 · github.com


