1. Get the content of the QR for Okta Verify app setup. It looks like this: `oktaverify://email@domain.com/?t=XXXXX&f=YYYYY&s=https://DOMAIN.okta.com&issuer=DOMAIN.okta.com&isIdxEnabled=true`
2. Replace `XXXXX`, `YYYYY` and `DOMAIN` to your values in curl below:
```bash
curl --request POST \
  --url https://DOMAIN.okta.com/idp/authenticators \
  --header 'Accept: application/json; charset=UTF-8' \
  --header 'Accept-Encoding: gzip, deflate' \
  --header 'Authorization: OTDT XXXXX' \
  --header 'Content-Type: application/json; charset=UTF-8' \
  --header 'User-Agent: D2DD7D3915.com.okta.android.auth/6.8.1 DeviceSDK/0.19.0 Android/7.1.1 unknown/Google' \
  --data '{
	"authenticatorId": "YYYYY",
	"device": {
		"clientInstanceBundleId": "com.okta.android.auth",
		"clientInstanceDeviceSdkVersion": "DeviceSDK 0.19.0",
		"clientInstanceVersion": "6.8.1",
		"clientInstanceKey": {
			"alg": "RS256",
			"e": "AQAB\n",
			"okta:isFipsCompliant": false,
			"okta:kpr": "SOFTWARE",
			"kty": "RSA",
			"use": "sig",
			"kid": "OpSRC6wLx4oPnqGBUuLz-WL7_knbK_UhClzjvt1cpOw",
			"n": "u0Y1ygDJ61AghDiEqeGW7lCv4iW2gLOON0Aw-Tm53xQW7qB94MUNVjua8KuYyxS-1pxf58u0pCpVhQxSgZJGht5Z7Gmc0geVuxRza3B_TFLd90SFlEdE3te6IkH28MqDu2rQtonYowVedHXZpOii6QBLPjqP6Zm3zx9r7WokpSvY9fnp8zjixuAUuA0XYhv6EwedfvSiz3t84N-nV0R1cN5Ni8os6sG4K6F8ZSr7E4aXTzvOfJIWa9MC1Lx_J4M7HIUuUH7LV7PN_h5yYk8b-2fW4g3_3h13mQ-blx2qMXclr6uuBc13tLLks7LzY3S34y2K060gHMMWCM4MQ77Mrw"
		},
		"deviceAttestation": {},
		"displayName": "1Password",
		"fullDiskEncryption": false,
		"isHardwareProtectionEnabled": false,
		"manufacturer": "unknown",
		"model": "Google",
		"osVersion": "25",
		"platform": "ANDROID",
		"rootPrivileges": true,
		"screenLock": false,
		"secureHardwarePresent": false
	},
	"key": "okta_verify",
	"methods": [
		{
			"isFipsCompliant": false,
			"supportUserVerification": false,
			"type": "totp"
		}
	]
}'
```
3. Send this request and get `sharedSecret` value from the response. This is your TOTP secret key. Paste it to the corresponding app (e.g. 1Password) and enjoy!

---
Notes:
* This request creates a new device named "1Password" in https://DOMAIN.okta.com/enduser/settings in "Security Methods" block
* If it returns invalid session error, probably your QR's content is expired
* If it returns 400 and complains to clientInstanceKey, try to replace `kid` and `n` to values from `https://DOMAIN.okta.com/oauth2/v1/keys`