diff --git a/scripts/copy-bundled-plugin-metadata.mjs b/scripts/copy-bundled-plugin-metadata.mjs
index 12211f9b29b..ea833bda43b 100644
--- a/scripts/copy-bundled-plugin-metadata.mjs
+++ b/scripts/copy-bundled-plugin-metadata.mjs
@@ -1,6 +1,7 @@
 import fs from "node:fs";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
+import { shouldBuildBundledCluster } from "./lib/optional-bundled-clusters.mjs";
 import {
   removeFileIfExists,
   removePathIfExists,
@@ -176,6 +177,11 @@ export function copyBundledPluginMetadata(params = {}) {
     if (!dirent.isDirectory()) {
       continue;
     }
+    // Skip optional bundled clusters that are not included in this build.
+    // This matches the filtering logic in tsdown.config.ts.
+    if (!shouldBuildBundledCluster(dirent.name, process.env)) {
+      continue;
+    }
     sourcePluginDirs.add(dirent.name);
 
     const pluginDir = path.join(extensionsRoot, dirent.name);