curl --request POST \
  --url https://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify \
  --header 'Content-Type: application/json' \
  --data '
{
  "ls_token": "<string>"
}
'

import requests

url = "https://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify"

payload = { "ls_token": "<string>" }
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({ls_token: '<string>'})
};

fetch('https://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify', 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://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify",
  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([
    'ls_token' => '<string>'
  ]),
  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://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify"

	payload := strings.NewReader("{\n  \"ls_token\": \"<string>\"\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://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify")
  .header("Content-Type", "application/json")
  .body("{\n  \"ls_token\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-sandbox.ledgersyncappv2.com/v3/connections/redirect-token/verify")

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  \"ls_token\": \"<string>\"\n}"

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

{
  "redirect_url": "https://myapp.example.com/cb",
  "connection_id": "con_FINICITY_41294",
  "client_id": "cli_smoke"
}

{
  "error": {
    "code": "unknown_api_key",
    "message": "The API key you presented doesn't match any active key.",
    "type": "auth_error",
    "doc_url": "https://portal.ledgersyncappv2.com/errors/unknown_api_key",
    "category": "AUTH_ERROR",
    "is_user_actionable": true,
    "source_diagnostic_code": "FIN-103",
    "param": "client.email",
    "trace_id": "4bf92f3577b34da6a3ce929d0e0e4736",
    "errors": [
      {
        "param": "client.email",
        "message": "must be a valid email address",
        "code": "invalid_email"
      }
    ]
  }
}