nifty-wallet/app/manifest.json

{
  "name": "MetaMask",
  "short_name": "Metamask",
  "version": "2.13.5",
  "manifest_version": 2,
  "author": "https://metamask.io",
  "description": "Ethereum Browser Extension",
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Alt+Shift+M",
        "mac": "Alt+Shift+M",
        "chromeos": "Alt+Shift+M",
        "linux": "Alt+Shift+M"
      }
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "128": "images/icon-128.png"
  },
  "applications": {
    "gecko": {
      "id": "webextension@metamask.io"
    }
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/chromereload.js",
      "scripts/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_title": "MetaMask",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "file://*/*",
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "scripts/contentscript.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "clipboardWrite",
    "clipboardRead",
    "http://localhost:8545/"
  ],
  "web_accessible_resources": [
    "scripts/inpage.js"
  ],
  "externally_connectable": {
    "matches": [
      "https://metamask.io/*"
    ]
  }
}