diff --git a/lib/coupang.js b/lib/coupang.js
index 10b5252..12df212 100644
--- a/lib/coupang.js
+++ b/lib/coupang.js
@@ -1,33 +1,29 @@
 // coupang.js
+// Coupang SERP API Client
 // Copyright 2019-2025, Namhyeon Go <gnh1201@catswords.re.kr> and the WelsonJS contributors.
 // SPDX-License-Identifier: GPL-3.0-or-later
 // https://github.com/gnh1201/welsonjs
 // 
-// SECURITY NOTICE
-// Due to potential security issues, the Public API URL is not provided. If you need to request access, please refer to the project's contact information.
-// You can download the server-side script that implements this functionality from the link below:
-// https://github.com/gnh1201/caterpillar
-// 
-var JsonRpc2 = require("lib/jsonrpc2");
+var HTTP = require("lib/http");
 
-function search(s) {
-    var rpc = JsonRpc2.create(JsonRpc2.DEFAULT_JSONRPC2_URL);
-    var result = rpc.invoke("relay_invoke_method", {
-        "callback": "load_script",
-        "requires": [
-            "https://scriptas.catswords.net/coupang.class.php"
-        ],
-        "args": [
-            "$search = new CoupangProductSearch(); return $search->searchProducts('" + s + "')"
-        ]
-    }, "");
+function search(keyword, limit) {
+    limit = (typeof limit !== "number" && limit > 0 ? 10 : limit);
 
-    return result.data;
+    return HTTP.create()
+        .setParameters({
+            "keyword": keyword,
+            "limit": limit
+        })
+        .setDataType("json")
+        .open("GET", "https://cold-math-31f3.gnh1201.workers.dev/api/v1/products/search")
+        .send()
+        .responseBody
+    ;
 }
 
 exports.search = search;
 
-exports.VERSIONINFO = "Coupang Product Search Client (coupang.js) version 0.1.1";
+exports.VERSIONINFO = "Coupang SERP API Client (coupang.js) version 1.0";
 exports.AUTHOR = "gnh1201@catswords.re.kr";
 exports.global = global;
 exports.require = global.require;