TDAM's API is a little weak on options. Although you can pull the entire option chain for almost any stock during trading hours, that's about all you can do. There's no historical data or realtime streaming, and there is a rate limit of some kind.
For stocks (not options), they took it to the next level, and you can stream price/volume data in psuedo realtime. I think you can also pull EOD data on stocks (not options) going back pretty far.
Ditto for TDAmeritrade but their forums are not very active. http://apiforums.tdameritrade.com/