Examine source code of FastFlows

{
  "name": "FastFlows",
  "description": "FastFlows",
  "version": "0.0.1",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [
        "https://*.mycashflow.fi/flow/*"
      ],
      "run_at": "document_end",
      "js": [
        "libs/jquery-3.6.3.min.js",
        "content.js"
      ],
      "all_frames": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extensions@halkeama.com"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "tabs"
  ],
  "host_permissions": [
    "https://*.mycashflow.fi/flow/*"
  ]
}