How can one obtain live data from interactive broker through API?

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To obtain live data from Interactive Brokers through API, you would need to follow these steps:

1. Create an account with Interactive Brokers and get approved for API access.

2. You will need to download and install the TWS API software and the relevant programming language interface.

3. Once the API is set up, connect to the Interactive Brokers API server and establish a connection.

4. Define the data you want to receive. For example, you may want to receive real-time stock quotes, tick data, historical data, or market depth data.

5. Request the data by sending a message to the API server, specifying the data parameters.

6. Set up a data handler to receive the incoming data and do something with it - usually to process it and display it in the desired format.

7. Once you're finished with the data, disconnect from the API server.

This process can be automated and integrated into your own software application or trading system, using the specified programming language interface.