Quick summary

When fetching plugins for a site where the JSON API module is disabled, one only receives an error.

Steps to reproduce

1. Start with a site that's connected to WordPress.com.
2. Go to Jetpack > Settings > Modules in wp-admin, and disable the JSON API module.
3. Go to https://cloud.jetpack.com/plugins/manage/yoursite.com

What you expected to happen

I expected to see a list of the different plugins installed on the site.

What actually happened

Instead I only get a "No plugins found." error. When looking at the API requests on that page, I see that the rest/v1.1/sites/site_id/plugins request returns a 403: "API calls to this blog have been disabled."

The request should always be available in Calypso.

One can see the expected result when running the same request in https://developer.wordpress.com/docs/api/console/

It returns the plugins installed on the site.

Impact

Some (< 50%)

Available workarounds?

No and the platform is unusable

Platform (Simple and/or Atomic)

Atomic, Self-hosted

Logs or notes

No response