From 3417a22199117cd009d7d6f18e2e31ef1d9e3d2e Mon Sep 17 00:00:00 2001
From: Hyeonwoo Cho <jakeecc@naver.com>
Date: Sun, 7 Dec 2025 22:44:20 +0900
Subject: [PATCH] return error on monitorId is null

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 pages/api/badge.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pages/api/badge.ts b/pages/api/badge.ts
index 9ecb35b..58f81b6 100644
--- a/pages/api/badge.ts
+++ b/pages/api/badge.ts
@@ -45,6 +45,12 @@ export default async function handler(req: NextRequest): Promise<Response> {
     const url = new URL(req.url)
 
     const monitorId = url.searchParams.get('id')
+    if (!monitorId) {
+      return new Response(JSON.stringify(errorBadge('UptimeFlare', 'id required')), {
+        headers: jsonHeaders,
+        status: 400,
+      })
+    }
     const label = url.searchParams.get('label') ?? 'UptimeFlare'
 
     const upMsg = url.searchParams.get('up') ?? 'UP'