diff --git a/pages/api/validateid.js b/pages/api/validateid.js
index f0c87c7..073e3e6 100644
--- a/pages/api/validateid.js
+++ b/pages/api/validateid.js
@@ -1,3 +1,4 @@
+import SteamIdCache from "../../src/caches/SteamIdCache";
 import WebsiteTypes from "../../src/consts/WebsiteType";
 
 const TO_CHECK = [
@@ -15,6 +16,13 @@ export default async function handler(req, res) {
 		});
 	}
 
+	if (SteamIdCache.has(steamId)) {
+		return res.json({
+			status: "OK",
+			message: SteamIdCache.get(steamId) ? `Invalid` : "Valid",
+		});
+	}
+
 	let invalid = false;
 	for (const url of TO_CHECK) {
 		const isValid = await checkLeaderboard(url, steamId);
@@ -28,6 +36,7 @@ export default async function handler(req, res) {
 		}
 	}
 
+	SteamIdCache.set(steamId, invalid);
 	return res.json({
 		status: "OK",
 		message: invalid ? `Invalid` : "Valid",
diff --git a/src/caches/SteamIdCache.js b/src/caches/SteamIdCache.js
new file mode 100644
index 0000000..2934fa0
--- /dev/null
+++ b/src/caches/SteamIdCache.js
@@ -0,0 +1,3 @@
+const CACHE = new Map();
+
+module.exports = CACHE;