curl --request POST \
  --url https://checkout.dintero.com/v1/sessions/{session_id}/qr \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "format": "png",
  "size": 300
}
'

import requests

url = "https://checkout.dintero.com/v1/sessions/{session_id}/qr"

payload = {
    "format": "png",
    "size": 300
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({format: 'png', size: 300})
};

fetch('https://checkout.dintero.com/v1/sessions/{session_id}/qr', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

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

func main() {

	url := "https://checkout.dintero.com/v1/sessions/{session_id}/qr"

	payload := strings.NewReader("{\n  \"format\": \"png\",\n  \"size\": 300\n}")

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

	req.Header.Add("x-api-key", "<api-key>")
	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://checkout.dintero.com/v1/sessions/{session_id}/qr")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"format\": \"png\",\n  \"size\": 300\n}")
  .asString();

{
  "qr": "<string>"
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "errors": [
      {}
    ]
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "errors": [
      {}
    ]
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "errors": [
      {}
    ]
  }
}

{
  "error": {
    "message": "<string>",
    "code": "<string>",
    "errors": [
      {}
    ]
  }
}