I tested the following solution for DSC alarm accessing over web and Blynk, using a NodeMCU V3. For users have more partitions the Blynk is better.
I installed a local Blynk server on a rpi, and for the NodeMCU (connected directly to a DSC keypad) followed the example codes. The Blynk app on android or ios just read the values decoded from the keypad bus, and display it, or inject specified codes to the alarm system. All this is quite simple, and works well and stable.
I’m thinking if pimatic accessing the NodeMCU via wifi, and read/write all the values from, can do the same that Blynk app can. I’m sure it can, and with some help, we can create a new awesome plugin for this.