Examine source code of Clip to GitHub

{
  "manifest_version": 2,
  "name": "Clip to GitHub",
  "version": "1.0.5",
  "description": "Upload clipboard contents to GitHub",
  "permissions": [
    "storage",
    "clipboardRead"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clip_to_gh.valentin@gosu.se"
    }
  }
}