curl --request POST \
  --url https://backendapi.corbado.io/v2/passkey/append/start \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '{
  "userID": "<string>",
  "processID": "<string>",
  "username": "<string>",
  "clientInformation": {
    "remoteAddress": "::ffff:172.18.0.1",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36",
    "clientEnvHandle": "<string>",
    "javascriptFingerprint": "<string>",
    "javaScriptHighEntropy": {
      "platform": "<string>",
      "platformVersion": "<string>",
      "mobile": true
    },
    "bluetoothAvailable": true,
    "passwordManagerAvailable": true,
    "userVerifyingPlatformAuthenticatorAvailable": true,
    "conditionalMediationAvailable": true,
    "privateMode": true,
    "parsedDeviceInfo": {
      "browserName": "<string>",
      "browserVersion": "<string>",
      "osName": "<string>",
      "osVersion": "<string>"
    },
    "nativeMeta": {
      "build": "<string>",
      "deviceOwnerAuth": "<string>",
      "isPlatformAuthenticatorAPISupported": true,
      "isBluetoothAvailable": true,
      "isBluetoothOn": true,
      "googlePlayServices": true,
      "deviceSecure": true
    }
  },
  "passkeyIntelFlags": {
    "forcePasskeyAppend": true,
    "askForAutoAppend": true
  }
}'

{
  "appendAllow": true,
  "attestationOptions": "{\"publicKey\":{\"challenge\":\"2m6...0w9/MgW...KE=\",\"rp\":{\"name\":\"demo\",\"id\":\"localhost\"},\"user\":{\"name\":\"example@mail.com\",\"id\":\"dXN...zk5\"},\"pubKeyCredParams\":[{\"type\":\"public-key\",\"alg\":-7},{\"type\":\"public-key\",\"alg\":-35},{\"type\":\"public-key\",\"alg\":-36},{\"type\":\"public-key\",\"alg\":-257},{\"type\":\"public-key\",\"alg\":-258},{\"type\":\"public-key\",\"alg\":-259},{\"type\":\"public-key\",\"alg\":-37},{\"type\":\"public-key\",\"alg\":-38},{\"type\":\"public-key\",\"alg\":-39},{\"type\":\"public-key\",\"alg\":-8}],\"authenticatorSelection\":{\"authenticatorAttachment\":\"platform\",\"requireResidentKey\":false,\"userVerification\":\"required\"},\"timeout\":60000,\"attestation\":\"none\"}}",
  "detectionInsights": {
    "tags": [
      {
        "category": "support",
        "name": "<string>"
      }
    ],
    "credentialIds": [
      "<string>"
    ],
    "clientEnvIds": [
      "<string>"
    ],
    "passwordManagerIds": [
      "<string>"
    ],
    "historyData": {
      "defaultCount": 123,
      "afterErrorCount": 123,
      "afterHybridCount": 123,
      "autoCount": 123,
      "defaultCooldown": true,
      "afterErrorCooldown": true,
      "afterHybridCooldown": true,
      "autoCooldown": true
    }
  },
  "decisionInsights": {
    "tag": "env-no-platform-pk-support",
    "isRestrictedBrowser": true,
    "variant": "default",
    "auto": true
  }
}