Seamless Integration / Extensive Documentation / Free Market Data

Integrate market data into your project via our API

The lemon.markets market data API provides you with access to stock market data of over 1500 ETFs and 6000 stocks. Retrieve historical prices or stream the price development of your favorites in real-time.

Historical market data

To retrieve historical market data with our REST-API, you simply request the corresponding API endpoints (quotes, trades or OHLC). You can specify your requests using query parameters, so it's easy to narrow down which data is actually relevant to you. How you ultimately use the data is up to you - for example, you could store it in your own database or use it for backtesting to understand how your project reacts to different market conditions. Or develop your own dashboard and visualize it there in charts.

You can test all this risk-free in our Sandbox, where we provide you with the full range of market data free of charge.

Real-time market data

With the lemon.markets market data API, you can also receive the latest quotes and trades directly and without delays (within a few seconds via our WebSockets) from selected trading venues. For example, you can stream live data, process it quickly & easily and integrate it into your use case to make informed buy or sell decisions. What exactly you do with the data is up to you and your creativity.

The best part? Your money does not flow into the procurement of the data, but you can use it completely for investing.

What advantages does our market data API provide?

Seamless integration

Integrate our stock database as well as historical & live market data quickly & easily into your project via our API.

Extensive documentation

An extensive documentation covering many edge cases to help you built. Following OpenAPI specs distributed with a Swagger file.

Free market data

The streaming of historical and real-time market data is available to you completely free of charge via our API.

The most important market data endpoints

Retrieve the latest prices or work through the historical data of the last months. Go directly to the source or simply use our aggregations in candlestick format.

Quotes Endpoint

Access the latest quotes (prices & volume) or make a request for a period of your choice.
Bid & Ask Price
Bid & Ask Volume
Up to 10 ISINs per request

Trades Endpoint

Retrieve trades of instruments on a tick-per-tick basis for specific time frames.
Prices & volume
Tick-per-Tick data
Up to 10 ISINs per request

OHLC Endpoint

Directly retrieve aggregations of trades in candlestick format on a per-minute, hourly or daily basis.
Historical prices
Open, high, low, close
Aggregations on M1/H1/D1

lemon.markets - a trading API for developers

lemon.markets enables developers to build their own investment and trading tools for the stock market. Do you enjoy developing your own trading bots, mobile applications or individual dashboards? We provide the infrastructure (trading & market data API) that enables you to work on your own ideas and bring them to life.

We are a (still) small team from Berlin & all over the world. Together with our community of more than 400 developers, we are putting in hard work to shape the future of security trading. To realize our vision of a world without barriers in brokerage, we need your help! Start now and support us with your time, feedback, or support on the many open source projects from the community or the API.

All you need to know about our API

FAQ - Everything about market data
For which instruments is the API intended?

Currently, our focus is on stocks and ETFs. However, if you are interested in other instruments such as bonds, derivatives or funds, you will also find them with us.

What kind of market data does lemon.markets offer?

With our API you have access to both historical (quotes, trades, OHLC) and live market data (real-time quotes & trades).

For which trading venues can I retrieve data?

So far, we offer data that comes directly from the Munich Stock Exchange ("XMUN"). However, technically, everything is already set up so that other trading venues can also be potentially integrated in the future. Stay tuned 😉.

When will I be able to access real-time market data?

We are currently testing it with a select group of developers and will be rolling it out to everyone over the coming weeks.

How far back can historical market data be retrieved?

Currently, you can access historical quotes, trades and OHLCs with us until August 6, 2021. If there is a need for data prior to this, we will be happy to look into it.

What does it cost to access market data with the lemon.markets API?

Once we officially launch the product, you can sign up for our three-tier subscription model (based on the intensity of use). The sandbox (paper money environment) will be available to you free of charge at any time.

Can indices such as the DAX or NASDAQ be accessed via lemon.markets?

Unfortunately not. However, you can call up trades, quotes, etc. for up to 10 ISINs at the same time and thus compile the data yourself.

Join now!

lemon.markets - a trading API for developers

It's time for a trading infrastructure that gives you the freedom to build your own projects. Historical and real-time data combined with easy order execution. All in one API.


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