Bridge Scripting!

I would like to open a folder images in Adobe Bridge, -> Open Images in Camera Raw --> Adjust tone curve as 'Medium Contrast" and save it.

and then

There is a simpler way of doing this (if the curve is always the same).

1. do it over a single image and click Done on ACR plugin;

2. select its Bridge thumbnail with right-button > Develop Settings > Copy Settings (or use keyborad shortcut CTRL+ALT+C)

3. Select all the other images you want to apply the curve settings;

4. right-click them and > Develop Settings > Paste Settings (or use keyborad shortcut CTRL+ALT+V) and make sure the curves are included. Click OK.

5. Done.

ps you can also delete all settings from a group of thumbnails with the same logic: right-click them and > Develop Settings > Clear Settings

I would start editing the processed images through photoshop scripting.

There are already several anwsers to this on the photoshop script forum.