Examine source code of MKM-PLUS

{
  "manifest_version": 2,
  "name": "MKM-PLUS",
  "version": "1.3",
  "description": "Adds usd pricing(tcgplayer) pulled from https://scryfall.com/ to https://www.cardmarket.com/en/Magic and enhances user experience",
  "icons": {
    "48": "icons/logo.png"
  },
  "permissions": [
    "activeTab",
    "https://api.scryfall.com/cards/cardmarket/"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.cardmarket.com/*/*/Orders/*"
      ],
      "js": [
        "content_scripts/dailyfy.js"
      ]
    },
    {
      "matches": [
        "*://*.cardmarket.com/*/Magic*"
      ],
      "js": [
        "content_scripts/priceyfy.js"
      ],
      "css": [
        "styles/mkm-us-price.css"
      ]
    },
    {
      "matches": [
        "*://*.cardmarket.com/*"
      ],
      "css": [
        "styles/better_eval.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a425ae29-1c8c-4e64-9b55-b652d35730ae}"
    }
  }
}