Can I get real time data (from NSE India) using Yahoo! Finance API after subscribing to their service ?
I wouldn't think so. If you read the list of features listed on the page you referred to, notice:
- Manage your portfolio(s) by selecting from over 50 criteria
- 3 exchanges: NYSE, NASDAQ, and AMEX [emphasis mine]
- Manipulate data better
It looks like it is restricted to the major U.S. stock markets. No mention of India's NSE.