curl --request POST \
  --url https://{tenant_id}.hanko.io/registration \
  --header 'Content-Type: application/json' \
  --data '
{
  "input_data": {
    "webauthn_available": false,
    "webauthn_conditional_mediation_available": false,
    "webauthn_platform_authenticator_available": false
  },
  "csrf_token": "qvcZt29spXYO77Y9IaxxN4MzLnmbjozl"
}
'

import requests

url = "https://{tenant_id}.hanko.io/registration"

payload = {
    "input_data": {
        "webauthn_available": False,
        "webauthn_conditional_mediation_available": False,
        "webauthn_platform_authenticator_available": False
    },
    "csrf_token": "qvcZt29spXYO77Y9IaxxN4MzLnmbjozl"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    input_data: {
      webauthn_available: false,
      webauthn_conditional_mediation_available: false,
      webauthn_platform_authenticator_available: false
    },
    csrf_token: 'qvcZt29spXYO77Y9IaxxN4MzLnmbjozl'
  })
};

fetch('https://{tenant_id}.hanko.io/registration', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{tenant_id}.hanko.io/registration",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'input_data' => [
        'webauthn_available' => false,
        'webauthn_conditional_mediation_available' => false,
        'webauthn_platform_authenticator_available' => false
    ],
    'csrf_token' => 'qvcZt29spXYO77Y9IaxxN4MzLnmbjozl'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://{tenant_id}.hanko.io/registration"

	payload := strings.NewReader("{\n  \"input_data\": {\n    \"webauthn_available\": false,\n    \"webauthn_conditional_mediation_available\": false,\n    \"webauthn_platform_authenticator_available\": false\n  },\n  \"csrf_token\": \"qvcZt29spXYO77Y9IaxxN4MzLnmbjozl\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://{tenant_id}.hanko.io/registration")
  .header("Content-Type", "application/json")
  .body("{\n  \"input_data\": {\n    \"webauthn_available\": false,\n    \"webauthn_conditional_mediation_available\": false,\n    \"webauthn_platform_authenticator_available\": false\n  },\n  \"csrf_token\": \"qvcZt29spXYO77Y9IaxxN4MzLnmbjozl\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{tenant_id}.hanko.io/registration")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"input_data\": {\n    \"webauthn_available\": false,\n    \"webauthn_conditional_mediation_available\": false,\n    \"webauthn_platform_authenticator_available\": false\n  },\n  \"csrf_token\": \"qvcZt29spXYO77Y9IaxxN4MzLnmbjozl\"\n}"

response = http.request(request)
puts response.read_body

{
  "actions": {
    "register_client_capabilities": {
      "action": "register_client_capabilities",
      "href": "<string>",
      "description": "<string>",
      "inputs": {
        "webauthn_available": {
          "name": "webauthn_available",
          "type": "boolean",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        },
        "webauthn_conditional_mediation_available": {
          "name": "webauthn_conditional_mediation_available",
          "type": "boolean",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        },
        "webauthn_platform_authenticator_available": {
          "name": "webauthn_platform_authenticator_available",
          "type": "boolean",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        }
      }
    }
  },
  "name": "preflight",
  "payload": {},
  "status": 200,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": []
}

{
  "actions": {
    "register_login_identifier": {
      "action": "register_login_identifier",
      "href": "<string>",
      "description": "<string>",
      "inputs": {
        "email": {
          "name": "email",
          "type": "email",
          "required": true,
          "min_length": 123,
          "max_length": 120,
          "hidden": false,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        },
        "username": {
          "name": "username",
          "type": "string",
          "required": false,
          "min_length": 3,
          "max_length": 40,
          "hidden": false,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        }
      }
    },
    "thirdparty_oauth": {
      "action": "thirdparty_oauth",
      "href": "<string>",
      "description": "<string>",
      "inputs": {
        "provider": {
          "name": "provider",
          "type": "string",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "apple"
            }
          ]
        },
        "redirect_to": {
          "name": "redirect_to",
          "type": "string",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        },
        "code_verifier": {
          "name": "code_verifier",
          "type": "string",
          "required": false,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        }
      }
    },
    "remember_me": {
      "action": "remember_me",
      "href": "<string>",
      "description": "<string>",
      "inputs": {
        "remember_me": {
          "name": "remember_me",
          "type": "boolean",
          "required": true,
          "min_length": 123,
          "max_length": 123,
          "hidden": true,
          "value": "<string>",
          "allowed_values": [
            {
              "name": "<string>",
              "value": "<unknown>"
            }
          ]
        }
      }
    }
  },
  "name": "registration_init",
  "payload": {},
  "status": 200,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "<string>",
    "message": "<string>",
    "cause": "<string>"
  }
}

{
  "actions": {},
  "name": "error",
  "payload": {},
  "status": 401,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "passcode_max_attempts_reached",
    "message": "The passcode was entered wrong too many times."
  }
}

{
  "actions": {},
  "name": "error",
  "payload": {},
  "status": 403,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "operation_not_permitted_error",
    "message": "The flow is not permitted."
  }
}

{
  "actions": {},
  "name": "error",
  "payload": {},
  "status": 410,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "flow_expired_error",
    "message": "The flow has expired."
  }
}

{
  "actions": {},
  "name": "error",
  "payload": {
    "resend_after": 60
  },
  "status": 429,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "rate_limit_exceeded",
    "message": "The rate limit has been exceeded."
  }
}

{
  "actions": {},
  "name": "error",
  "payload": {},
  "status": 500,
  "csrf_token": "HvUwWSfPgz7VnwiS8VMDpnhZ1wNwTNiV",
  "links": [],
  "error": {
    "code": "technical_error",
    "message": "Something went wrong."
  }
}