import requests

url = "https://{FUSION HOST}/api/connectors/pluginsByCategory"

response = requests.get(url)

print(response.json())

{
  "Repository": {
    "lucid.jira": [
      {
        "name": "jira",
        "title": "JIRA (deprecated)"
      }
    ],
    "lucid.confluence": [
      {
        "name": "confluence",
        "title": "Confluence (deprecated)"
      }
    ],
    "lucidworks.file-upload": [
      {
        "name": "lucidworks.file-upload",
        "title": "File Upload (v2)"
      }
    ]
  },
  "Web": {
    "lucidworks.web-v2": [
      {
        "name": "lucidworks.web-v2",
        "title": "Web (v2)"
      }
    ],
    "lucid.web": [
      {
        "name": "web",
        "title": "Web (deprecated)"
      }
    ]
  },
  "Filesystem": {
    "lucid.fileupload": [
      {
        "name": "fileupload",
        "title": "File Upload (deprecated)"
      }
    ]
  }
}