aenhancers

Is there a way to query a list of effects available in that session of after effects.

I don't think there's a way for AE scripting to directly query which effects are available. The best solution I've come up with is to use the Effects & Presets Palette (set to Alphabetical and turn off Show Animation Presets) to select all available effects and drag them onto a layer, then use my Search Effects script to create a list.

If you created a list of the matchNames (i.e ADBE Easy Levels) of every possible effect, you could then write a script that attempted to add each effect on that list to a layer. Wrap this inside a try/catch statement and you should be able to get a list of which effects were actually available in that session.

Paul T