curl --request GET \
  --url https://registry.wp-content.io/themes/{slug}/versions/{version} \
  --header 'X-API-KEY: <api-key>'

import requests

url = "https://registry.wp-content.io/themes/{slug}/versions/{version}"

headers = {"X-API-KEY": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-API-KEY': '<api-key>'}};

fetch('https://registry.wp-content.io/themes/{slug}/versions/{version}', 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://registry.wp-content.io/themes/{slug}/versions/{version}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-API-KEY: <api-key>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://registry.wp-content.io/themes/{slug}/versions/{version}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-KEY", "<api-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://registry.wp-content.io/themes/{slug}/versions/{version}")
  .header("X-API-KEY", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://registry.wp-content.io/themes/{slug}/versions/{version}")

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

request = Net::HTTP::Get.new(url)
request["X-API-KEY"] = '<api-key>'

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

{
  "version": "1.0.0",
  "release_notes": "Version update",
  "download_link": "https://wp-content-staging.s3.fr-par.scw.cloud/artifacts/themes/my-theme/my-theme-1.0.0-86869156b3b9fbffd6e69fa6cf49452a.zip",
  "checksum": "86869156b3b9fbffd6e69fa6cf49452a",
  "latest": false
}

{
  "status": 404,
  "error": 404,
  "messages": {
    "error": "Not Found"
  }
}