diff --git a/api/user/link-roblox.ts b/api/user/link-roblox.ts
new file mode 100644
index 00000000..d0a768d7
--- /dev/null
+++ b/api/user/link-roblox.ts
@@ -0,0 +1,59 @@
+import type { VercelRequest, VercelResponse } from "@vercel/node";
+import { createClient } from "@supabase/supabase-js";
+
+const supabase = createClient(
+  process.env.SUPABASE_URL || "",
+  process.env.SUPABASE_SERVICE_ROLE || "",
+);
+
+export default async function handler(req: VercelRequest, res: VercelResponse) {
+  if (req.method !== "POST") {
+    res.setHeader("Allow", "POST");
+    return res.status(405).json({ error: "Method not allowed" });
+  }
+
+  try {
+    const authHeader = req.headers.authorization;
+    if (!authHeader || !authHeader.startsWith("Bearer ")) {
+      return res.status(401).json({ error: "Missing authorization header" });
+    }
+
+    const token = authHeader.substring(7);
+
+    // Verify token with Supabase
+    const { data: userData, error: authError } = await supabase.auth.getUser(token);
+    if (authError || !userData.user) {
+      return res.status(401).json({ error: "Invalid token" });
+    }
+
+    const { roblox_user_id, roblox_username } = req.body;
+
+    if (!roblox_user_id || !roblox_username) {
+      return res.status(400).json({ error: "Missing Roblox user info" });
+    }
+
+    // Update user profile with Roblox info
+    const { error: updateError } = await supabase
+      .from("user_profiles")
+      .update({
+        roblox_user_id: String(roblox_user_id),
+        roblox_username,
+      })
+      .eq("auth_id", userData.user.id);
+
+    if (updateError) {
+      console.error("Failed to link Roblox:", updateError);
+      return res.status(500).json({ error: "Failed to link Roblox account" });
+    }
+
+    return res.status(200).json({
+      success: true,
+      message: "Roblox account linked successfully",
+    });
+  } catch (error: any) {
+    console.error("Link Roblox error:", error);
+    return res.status(500).json({
+      error: error?.message || "Failed to link account",
+    });
+  }
+}