diff --git a/packages/core/src/config/config.test.ts b/packages/core/src/config/config.test.ts
index 8ef3f76856..b82fd421ca 100644
--- a/packages/core/src/config/config.test.ts
+++ b/packages/core/src/config/config.test.ts
@@ -1522,16 +1522,16 @@ describe('Server Config (config.ts)', () => {
       const config = new Config(baseParams);
       vi.spyOn(config, 'getExtensions').mockReturnValue([
         {
-          name: 'my-ext',
+          name: 'my-ext-name',
           version: '1.0',
           isActive: true,
           path: '/ext',
           contextFiles: [],
-          id: 'my-ext',
+          id: 'my-ext-id',
         },
       ]);
       expect(
-        config.getExtensionSetting('my-ext', 'some.setting'),
+        config.getExtensionSetting('my-ext-id', 'some.setting'),
       ).toBeUndefined();
     });
 
@@ -1539,12 +1539,12 @@ describe('Server Config (config.ts)', () => {
       const config = new Config(baseParams);
       vi.spyOn(config, 'getExtensions').mockReturnValue([
         {
-          name: 'my-ext',
+          name: 'my-ext-name',
           version: '1.0',
           isActive: true,
           path: '/ext',
           contextFiles: [],
-          id: 'my-ext',
+          id: 'my-ext-id',
           resolvedSettings: [
             {
               name: 'some.setting',
@@ -1555,7 +1555,7 @@ describe('Server Config (config.ts)', () => {
           ],
         },
       ]);
-      expect(config.getExtensionSetting('my-ext', 'some.setting')).toBe(
+      expect(config.getExtensionSetting('my-ext-id', 'some.setting')).toBe(
         'custom-val',
       );
     });
diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index be6fb6c161..4d93102857 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -2847,15 +2847,15 @@ export class Config implements McpContext, AgentLoopContext {
   /**
    * Retrieves a setting value for a specific extension.
    *
-   * @param extensionName - The name of the extension.
+   * @param extensionId - The ID of the extension.
    * @param settingName - The name of the setting to retrieve.
    */
   getExtensionSetting(
-    extensionName: string,
+    extensionId: string,
     settingName: string,
   ): string | undefined {
     const ext = this.getExtensions().find(
-      (e) => e.name === extensionName && e.isActive,
+      (e) => e.id === extensionId && e.isActive,
     );
     if (!ext || !ext.resolvedSettings) {
       return undefined;