[FREE DLC] Script to add all(?) Free DLC for all Games [Updated]

It became blocked for me ~2 days ago, using uBlock Origin.

That would be fun idea for a malware, adding everything free on Steam to your account. Then promise to remove them if you pay so you don't have to clean your library manually.

It will be removed in next update.

happy cake there!

Thanks for info. This was due to cloudflare minifying javascript files.

this for use inside your browser like chrome or firefox with greasemonkey / tampermonkey pluggins

This is the version I got a while back, still running fine (?) on my browser.

// ==UserScript==
// @name        Steam.madjoki.com - Owned Games Support
// @namespace   Madjoki
// @include     *//steam.madjoki.com/*
// @version     26
// @grant       GM_xmlhttpRequest
// ==/UserScript==

(function () {

    window.postMessage({
        'type': 'extensionInstalled',
        'version': 26
    }, "*");

    function updateGames()
    {
        localStorage.extensionLastUpdate = new Date().getTime();

        var link = "https://store.steampowered.com/dynamicstore/userdata/?t=" + (new Date().getTime());

        GM_xmlhttpRequest({
            method: "GET",
            url: link,
            timeout: 5000,
            onload: function(response) {

                var jsonFile = JSON.parse(response.responseText);

                if (jsonFile.rgOwnedPackages.length === 0)
                {
                    window.postMessage({
                        'type': 'extensionLogout',
                    }, "*");

                    return;
                }

                window.postMessage({
                    'type': 'updateUserdata',
                    'json': jsonFile
                }, "*");

            },
        });
    }

    var steamSessionID = null;

    function getSteamSessionID(callback)
    {
        if (steamSessionID !== null)
        {
            callback(steamSessionID);
            return;
        }

        GM_xmlhttpRequest({
            method: "GET",
            url: "https://store.steampowered.com/",
            timeout: 5000,
            onload: function(response) {

                // Get Session ID
                // Needed to add package
                var m = /g_sessionID = "([^"]+)"/.exec(response.responseText);

                steamSessionID = m[1];

                callback(steamSessionID);
            },
        });
    }

    function addPackage(subid, callback)
    {
        getSteamSessionID(function (sessionID) {

            GM_xmlhttpRequest({
                    method: "POST",
                    url: "https://store.steampowered.com/checkout/addfreelicense",
                    timeout: 5000,
                    data: $.param({
                        action: 'add_to_cart',
                        sessionid: sessionID,
                        subid: subid
                    }),
                    headers: {
                        "Content-Type": "application/x-www-form-urlencoded"
                    },
                    onload: function(response) {

                        var dom = $.parseHTML(response.responseText);

                        var success = $(dom).find(".add_free_content_success_area");
                        var failure = $(dom).find("#error_box");

                        if (success.length)
                            callback(true, success.text());
                        else
                            callback(false, failure.text() || "Error");
                    }
                });

        });
    }

    // Add Package to account
    $(".extension-add-package").click(function (ev) {

        ev.preventDefault();

        var btn = $(this);

        var subid = btn.data('package-id');

        addPackage(subid, function (success, text) {
            if (success)
                btn.text('OK');
            else
                btn.text('Error');
        });
    });

    $(".extension-add-packages").click(function (ev) {
        ev.preventDefault();

        var btn = $(this);

        var subids = btn.data('packages');

        var current = 0;
        var total = subids.length;

        function addNext()
        {
            if (current == total)
            {
                btn.text('Done');
                return;
            }

            addPackage(subids[current], function (success, status) {
                current++;

                btn.text(current + ' / ' + total);

                addNext();
            });
        }

        addNext();

    });

    $(".extension-add-package").removeAttr('disabled').removeClass('disabled');
    $(".extension-add-packages").removeAttr('disabled').removeClass('disabled');

    var updateCutoff = (new Date().getTime()) - (30 * 60 * 1000);

    if (localStorage.extensionLastUpdate === undefined || localStorage.extensionLastUpdate < updateCutoff)
        updateGames();
    else
        console.log("not updating");

    $("#updateGames").click(updateGames);

})();

I forced cleanup as some Cloudflare nodes had stuck with broken version. Make sure you clean cache and reinstall.

It seems to be broken for some, but still works for most. Might be on steam. (one other person is having trouble too).
If you can't install with client, then it's on steam.

I don't see any packages above app-id 300.000 here: https://steam.madjoki.com/apps/free

same here