Thank you for writing to Rainmatter.In first paragraph they are saying we can execute/place/modify orders. In last paragraph they are saying that we can use API to generate alerts.
The Kite Connect APIs are primarily meant for building an execution platform. You can stream live data, place/modify orders, fetch your order book, margin limits, etc. The APIs are charged at Rs 2000 per month per app. You can start off by signing up to https://kite.trade/
You can read our API documentation.
And, all your technical queries can be posted in the developer forum.
The exchanges do not allow fully-automated trading for retail traders in India. Therefore, you could perhaps use the APIs to generate alerts to trade opportunities.
Hope, I have answered your query.