hi xchrix! Thanks for the interest.
There is already a related feature implemented.
maybe it is good enough for you.

web interface:
https://masterchain.info/Currencies.html you get the overview of volume, last price (with links to last trades of that currency), etc.
https://masterchain.info/index.html?filter=accept¤cy=GRZ - the last deals of GRZ coin.

json:
https://masterchain.info/general/GRZ_accept_0001.json - the last 10 deal accepts of GRZ coin.
https://masterchain.info/general/MSC_accept_0002.json - the previous last 10 deal accepts of MSC coin.
https://masterchain.info/general/GRZ_sell_0001.json - the previous last 10 sell orders of GRZ coin.
https://masterchain.info/general/extracted_currencies.json - the automatically extracted currencies list (with their names, their exodus address, the amount minted, their internal currency list, which is now real and test coin only, and more).
https://masterchain.info/currencies.json - currencies, last price, number of transaction history pages, number of sell transaction history pages, number of accept transaction history pages, exodus address.


obviously these API exist for each generated currency.

If you need some different data on the api - just ask, and I'll see what it takes to implement it.