diff --git a/is_offline_api.py b/is_offline_api.py
new file mode 100644
index 0000000..f4252f8
--- /dev/null
+++ b/is_offline_api.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+# app.py
+import requests
+from flask import Flask, jsonify, abort
+
+app = Flask(__name__)
+
+
+def check_video_removed(video_id):
+    """
+    调用 Dailymotion API 判断视频是否已下架／删除
+    返回:
+        1 → 已被删除 / 不存在 / 已下架 / 设为私有
+        0 → 正常公开中
+    """
+    url = f"https://api.dailymotion.com/video/{video_id}"
+    params = {"fields": "published,private,status"}
+    try:
+        resp = requests.get(url, params=params, timeout=10)
+    except requests.RequestException as exc:
+        # 网络错误时返回 503，让上游知道需要重试
+        abort(503, description=f"Upstream request failed: {exc}")
+
+    # 404 → 不存在或已被删除
+    if resp.status_code == 404:
+        return 1
+
+    # 其他非 2xx 状态码 → 直接透传给客户端
+    if resp.status_code // 100 != 2:
+        abort(resp.status_code, description=resp.text)
+
+    data = resp.json()
+    # published=False 或 private=True 都视作“已下架”
+    if not data.get("published", False) or data.get("private", False):
+        return 1
+
+    return 0
+
+
+@app.route("/video/<video_id>/status", methods=["GET"])
+def video_status(video_id):
+    removed = check_video_removed(video_id)
+    return jsonify({"video_id": video_id, "removed": removed})
+
+
+if __name__ == "__main__":
+    # 支持通过环境变量覆盖监听地址和端口
+    import os
+    host = os.getenv("HOST", "0.0.0.0")
+    port = int(os.getenv("PORT", "5100"))
+    app.run(host=host, port=port, debug=False)