Examine source code of OpenAllClaims

{
  "manifest_version": 2,
  "name": "OpenAllClaims",
  "version": "1.2",
  "description": "Opens all claims associated with a given address in separate tabs",
  "browser_specific_settings": {
    "gecko": {
      "id": "open-all-claims@addon",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "*://work.dispatch.me/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://work.dispatch.me/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icon.png"
  }
}