Tools for documenting and mapping APIs with application's user interface for impact analysis

I work on developing API services that internally call multiple micro-services

I was looking for a tool that could help me map public facing APIs with the application's user interface (application is available as native android/ios and PWA)

We do use tools like Swagger and NewRelic for internally maintaining API related details and documentation. However, I was trying to look up any tool(preferably open-source) that could help me map the api calls with the user interface

For example:
A Homepage Screen for the app with multiple buttons. Each button makes a REST API call. These REST APIs internally call micro services.
I would like to have a UI based tool where I could show the Homepage screen for the app(a screenshot) and then write APIs endpoints and routes associated to each button.

The reason I am looking to do this is because I believe this will make new people on the team(and external stakeholders) easier to read and refer to the application flow and how it is tied to the REST APIs. This will also make impact analysis easier when making changes to certain services/APIs

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