Examine source code of API Debugger - Capture

{
  "manifest_version": 2,
  "name": "API Debugger - Capture & Debug HTTP Requests",
  "description": "Inspect every HTTP request your browser makes. Capture, replay, build, and debug APIs. No account. No tracking.",
  "version": "1.0.15",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "homepage_url": "https://dracon.uk",
  "browser_specific_settings": {
    "gecko": {
      "id": "api-debugger@dracon.uk",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "default_locale": "en",
  "permissions": [
    "webRequest",
    "webRequestAuthProvider",
    "storage",
    "activeTab",
    "tabs",
    "cookies",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "injected.js"
  ],
  "content_security_policy": "script-src 'self'; object-src 'none'",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icon/16.png",
      "32": "icon/32.png",
      "48": "icon/48.png",
      "128": "icon/128.png"
    }
  }
}