diff --git a/src/plugins/loader.ts b/src/plugins/loader.ts
index c36c84eeca9..1c9e3625203 100644
--- a/src/plugins/loader.ts
+++ b/src/plugins/loader.ts
@@ -758,6 +758,14 @@ function hasExplicitCompatibilityInputs(options: PluginLoadOptions): boolean {
   );
 }
 
+function resolveCoreGatewayMethodNames(options: PluginLoadOptions): string[] {
+  const names = new Set(options.coreGatewayMethodNames ?? []);
+  for (const name of Object.keys(options.coreGatewayHandlers ?? {})) {
+    names.add(name);
+  }
+  return Array.from(names).toSorted();
+}
+
 function pluginLoadOptionsMatchCacheKey(
   options: PluginLoadOptions,
   expectedCacheKey: string,
@@ -890,12 +898,7 @@ function resolvePluginLoadCacheContext(options: PluginLoadOptions = {}) {
   const preferSetupRuntimeForChannelPlugins = options.preferSetupRuntimeForChannelPlugins === true;
   const shouldInstallBundledRuntimeDeps = options.installBundledRuntimeDeps !== false;
   const runtimeSubagentMode = resolveRuntimeSubagentMode(options.runtimeOptions);
-  const coreGatewayMethodNames = Array.from(
-    new Set([
-      ...(options.coreGatewayMethodNames ?? []),
-      ...Object.keys(options.coreGatewayHandlers ?? {}),
-    ]),
-  ).toSorted();
+  const coreGatewayMethodNames = resolveCoreGatewayMethodNames(options);
   const installRecords = {
     ...loadInstalledPluginIndexInstallRecordsSync({ env }),
     ...cfg.plugins?.installs,