flow-agent/Flow-extension/rules.json

[
  {
    "id": 1,
    "priority": 1,
    "action": {
      "type": "modifyHeaders",
      "requestHeaders": [
        {
          "header": "Referer",
          "operation": "set",
          "value": "https://labs.google/"
        },
        {
          "header": "Origin",
          "operation": "set",
          "value": "https://labs.google"
        }
      ]
    },
    "condition": {
      "urlFilter": "aisandbox-pa.googleapis.com",
      "resourceTypes": ["xmlhttprequest"]
    }
  }
]