Alpaca Data API
Free real-time stock market data API
Alpaca Data API launched on May 11, 2020 with 321 votes, #47 of 4,813 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
Alpaca Data API provides real-time stock market data for developers building trading applications and algorithmic trading strategies. The API is free to use and delivers stock price data with up to 99.95% accuracy compared to commercial market data feeds. It serves developers and traders who need reliable, cost-effective access to market information without paying for traditional data providers.
written from the facts on this page · September 2026
From the sources
Alpaca Data API is your new go-to data API for building trading apps & algorithmic trading strategies and is free to use. It provides real-time stock price data with up to 99.95% price accuracy compared to well-known expensive consolidated market data feeds.
Developer-first market data API with up to 10,000 API calls/min and over 7 years of historical data.
For any ticker down to the second. True event-based streaming market data via Websockets, instead of being limited to pulling minute or daily bar data. Build sophisticated trading strategies using a suite of order types including OCO, IOC, MOO, and MOC. Allowing you to develop and test your strategies with confidence. Gives you access to any minute/hour/daily bar data to support your trading strategies. With our global support team, we’re here to help you choose the best plan for your goals. Contact us and one of our team members will help you find the right plan. Brokerage services are provided by Alpaca Clearing, member FINRA / SIPC , a wholly-owned subsidiary of AlpacaDB, Inc. Brokerage…from alpaca.markets
Does a similar job
all alternatives →
Alpaca Fractional Trading API2021 · alpaca.markets · ▲271Commission-free API to trade & invest for as little as $1
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲340Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 27d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, May 2020
the whole month →
SHA-256 Animation▲1,053Animation of the SHA-256 hash function in your terminal. - in3rsha/sha256-animation
Dev tools · 2020 · github.com
This Word Does Not Exist uses an artificial intelligence model named GPT-2 to invent new English words.
AI · 2020 · thisworddoesnotexist.com
- P3
Life & fun · 2020 · leeoniya.github.io
