GameMaker (2.3)

Request Master


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Request Master is a full-featured toolkit for using http_request() to its potential. Send HTTP requests with parameters already encoded for you, instead of manually escaping them and building query strings. The included request helpers also enable handling the response using a callback instead of a separate Async HTTP event.


  • Send requests in properly encoded application/x-www-form-urlencoded, multipart/form-data and application/json formats
  • Binary-safe file downloading with optional header and SHA1 validation support
  • Inline support for headers, no need for an extra map
  • Automatic parsing for JSON responses
  • Intuitive response handling with callbacks


See the Wiki section on the official GitHub repository.


Accessing Steam API:

xhr_get("", {
    params: { appid: 282800, count: 1 },
    done: function(res) {
        show_message("Latest news from 100% Orange Juice: " +[0].title);
    fail: function() {
        show_message("Can't fetch headlines from Steam.");

Downloading a file:

xhr_download("", working_directory + "gmlegacy.jpg", {
    done: function(res) {
        sprite_index = sprite_add(res.file, 1, false, false, 0, 0);
    fail: function(res) {
        show_message_async("Failed to download the image!");

End User Licence Agreement (EULA).

Age Rating: 4+


GMS2.3 - Version 1.2.1. Published September 19, 2021

Fix Cannot delete buffer, it's in use by 1 others error when xhr_download is interrupted mid-download.

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