Stock screener Script

[skibur]

I wrote a script that takes 2 values for Example: $15.00 and
$16.00

Using the url below, I able to query all stocks between the range
above using "Add criteria" prices.
http://www.google.com/finance#stockscreener

My question is, "Since I'm using URLs to get my results (json) and
parsing them, am I in violation with google's terms?"

If I am, what can I using to get the above results? I can't seem to
find "Stock Screener functionality" in the Google Finance APIs and
tools.

Thank you.