US Equities Data Feed API

Anyone know of a data feed that has an API for Stock market depth/level 2?

 

IB, IQ Feed and many others. use search

 

If I remember good, IQ said they dont have all the books..like Nasdaq Totalview, and some other ones...

 

You need to open an account with IB in order to get access to the API?

 

No, you can use the API also with the demo account,
but then historical quotes from the last week or so are played in the demo.

For realtime quotes you would need to open an acct, and then for testing your API-App with realtime quotes
you can use the "papertrader" mode of your account.

 

Thanks! Thats good news.