Write Acrobat Pro plugin using Adobe Javascript API

[adhirath_7243]

Is it possible to create plugins in Adobe Acrobat Pro using Adobe JavaScript or plugins only support C++?

[creative explorer]

@adhirath_7243 yes, you could create extensions for Acrobat Pro using JavaScript! C++ is the traditional way to build deep, system-level plugins that can fundamentally change how Acrobat works—like adding a brand new tool to the toolbar or creating a custom file format—Adobe's robust JavaScript API allows you to automate tasks and add functionality within the PDF environment. 

[adhirath_7243]

I'm trying to create a tool for Adobe Acrobat Pro that can add accessibility tags to selected text through a custom toolbar button. The catch is I need this to work across any PDF without embedding scripts in each document - basically like a plugin that's installed once and available for all PDFs I open.

The tool also needs to communicate with my server through CRUD APIs to sync tagging rules and definitions. I want to distribute this to multiple clients, so it needs to be easily installable on their machines.

My main questions are: Can I achieve this with JavaScript (like folder-level scripts or Action Wizards), or do I need to build a proper C++ plugin using the Acrobat SDK? Is it even possible for JavaScript in Acrobat to make external API calls reliably? 

I'm essentially building an accessibility tool that standardizes how structure tags are applied across an organization while supporting API communication from a central server.
I'm new to Adobe and would really appreaciate some advice thanks!