Examine source code of OneLook Lookup

{
  "manifest_version": 3,
  "name": "OneLook Sidebar Search",
  "version": "1.1",
  "description": "Right-click selected text to search it on OneLook.com.",
  "permissions": [
    "contextMenus",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_panel": "sidebar.html",
    "default_title": "OneLook Search"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "onelook-lookup@mytools",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "searchTerms"
        ]
      }
    }
  }
}