I don’t know about doing it automatically, but you can do it manually using Swarm, as shown by Angel here: Locating earthquakes with Swarm - #4 by TideMan
Providing the epicentre is within your network, the location and depth can be calculated quite accurately using 4 or 5 RSs, but I haven’t managed to get the magnitude right - it’s usually underestimated. This is in comparison to “official” calculations done using a network of a dozen or more seismometers.