curl -X POST https://phosra-api-sandbox-production.up.railway.app/oauth/token \
  -H "Content-Type: application/x-www-form-urlencoded" \
  -d "grant_type=authorization_code&code=sbxauth_QBmKueI14KzQj9PM-2M9naWGkh2OU6WL"

const BASE = "https://phosra-api-sandbox-production.up.railway.app"
const res = await fetch(`${BASE}/oauth/token`, {
  method: "POST",
  headers: { "Content-Type": "application/x-www-form-urlencoded" },
  body: new URLSearchParams({ grant_type: "authorization_code", code: "sbxauth_QBmKueI14KzQj9PM-2M9naWGkh2OU6WL" }),
})
const { access_token } = await res.json()
console.log(res.status, access_token) // 200  sbxtok_…

import requests

url = "https://phosra-api-sandbox-production.up.railway.app/oauth/token"

payload = {
    "grant_type": "authorization_code",
    "code": "sbxauth_…"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/x-www-form-urlencoded"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://phosra-api-sandbox-production.up.railway.app/oauth/token",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "grant_type=authorization_code&code=sbxauth_%E2%80%A6",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/x-www-form-urlencoded"
  ],
]);

$response = curl_exec($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://phosra-api-sandbox-production.up.railway.app/oauth/token"

	payload := strings.NewReader("grant_type=authorization_code&code=sbxauth_%E2%80%A6")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://phosra-api-sandbox-production.up.railway.app/oauth/token")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/x-www-form-urlencoded")
  .body("grant_type=authorization_code&code=sbxauth_%E2%80%A6")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://phosra-api-sandbox-production.up.railway.app/oauth/token")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/x-www-form-urlencoded'
request.body = "grant_type=authorization_code&code=sbxauth_%E2%80%A6"

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

{
  "access_token": "sbxtok_8zc0PBmNAjyIs3p8B3Y2oxQW2csHHoy1",
  "token_type": "Bearer",
  "expires_in": 3600,
  "scope": "profiles"
}

{
  "error": "unsupported_grant_type"
}

404 page not found

{
  "error": "Too Many Requests",
  "message": "rate limit exceeded",
  "code": 429
}

{
  "error": "Internal Server Error",
  "message": "internal error",
  "code": 500
}

{
  "error": "Bad Gateway",
  "message": "downstream provider error",
  "code": 502
}

{
  "error": "Service Unavailable",
  "message": "downstream provider unavailable",
  "code": 503
}