Hi @davenz if you want an EA to provide alerts I don't think that EA Labs can do that (I haven't seen any alert capability or functions on the platform). But, I have some experience with Pro Real Time on IG Markets and that imo is excellent for writing small scripts to provide alerts and custom indicators - even though it is more like coding than EA Labs, the code is very simple for alerts / indicators / chart conditions to produce alerts - usually no more than 10-20 lines of logic.
For example, I wrote the following custom indicators flagging (1) engulfing bars and (2) engulfing bars further indicating where the close is that I can place at the bottom of any chart, any timeframe and which PRT automatically uses to trigger alerts from:
The result of the script on the left hand side is shown in a chart example below at the bottom below a bunch of other custom indicators - and PRT gives you the ability to set alerts on any/all of those:
PRT comes with very easy to read guides for each of PRT probuilder (for indicators or EA's) probacktester (for backtesting conditions) and prosceener - all using the same coding rules so if you learn one you basically learn how to use them all. A very good beginner level tool.
I went nuts at one stage and wrote indicators and alerts for all sorts of things (as you can see above) for my stats, great for analysis or simply for alerts.