A way or a plugin to add metadata/properties/attributes to Figma components.

Have you tried using plugins like BulkMeta? The project seems to be stagnated in maintenance mode with the last notable change being in 2023, but it does the job for my component library. 

How useful you may find this depends on what metadata you’re trying to retrieve. I use it to better manage all of the component variants in my component library. To save you from downloading this and running it in your design branches, I’ve provided some sample data of what the output usually looks like:
 

Here’s a link for the plugin in Figma Community:
https://www.figma.com/community/plugin/1217084230796932000/bulkmeta

Hope this helps.

​@Valeri Ivanov 

Thank you for your prompt reply, but I think BulkMeta is not the plugin that can help me in this scenario. 

I want a way to add Meta data while instantiating the component and using it to create a page’s design.

So my idea is I will have a bunch of components like Button, ComboBox, Radio Button, Table, TextArea, and TextInput, and when someone uses those components to create a new design they will have the flexibility to add new metadata to that instance. 

In that way when I’ll try fetching the details via API for that page I'll get these added metadata. The metadata values can not be static and the user should be able to provide the values of those metadata at the time of instantiation of the components. Only the metadata template would be defined at the component level.