2 files changed, 27 insertions, 0 deletions
diff --git a/packages/core/src/config/config.test.ts b/packages/core/src/config/config.test.ts
index 64692139..8e6ca38f 100644
--- a/packages/core/src/config/config.test.ts
+++ b/packages/core/src/config/config.test.ts
@@ -150,6 +150,18 @@ describe('Server Config (config.ts)', () => {
 
       await expect(config.initialize()).resolves.toBeUndefined();
     });
+
+    it('should throw an error if initialized more than once', async () => {
+      const config = new Config({
+        ...baseParams,
+        checkpointing: false,
+      });
+
+      await expect(config.initialize()).resolves.toBeUndefined();
+      await expect(config.initialize()).rejects.toThrow(
+        'Config was already initialized',
+      );
+    });
   });
 
   describe('refreshAuth', () => {
diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index db226c76..473ab5a6 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -197,6 +197,7 @@ export interface ConfigParameters {
   ideMode?: boolean;
   loadMemoryFromIncludeDirectories?: boolean;
   chatCompression?: ChatCompressionSettings;
+  interactive?: boolean;
 }
 
 export class Config {
@@ -260,6 +261,8 @@ export class Config {
   private readonly experimentalAcp: boolean = false;
   private readonly loadMemoryFromIncludeDirectories: boolean = false;
   private readonly chatCompression: ChatCompressionSettings | undefined;
+  private readonly interactive: boolean;
+  private initialized: boolean = false;
 
   constructor(params: ConfigParameters) {
     this.sessionId = params.sessionId;
@@ -326,6 +329,7 @@ export class Config {
     this.loadMemoryFromIncludeDirectories =
       params.loadMemoryFromIncludeDirectories ?? false;
     this.chatCompression = params.chatCompression;
+    this.interactive = params.interactive ?? false;
 
     if (params.contextFileName) {
       setGeminiMdFilename(params.contextFileName);
@@ -344,7 +348,14 @@ export class Config {
     }
   }
 
+  /**
+   * Must only be called once, throws if called again.
+   */
   async initialize(): Promise<void> {
+    if (this.initialized) {
+      throw Error('Config was already initialized');
+    }
+    this.initialized = true;
     // Initialize centralized FileDiscoveryService
     this.getFileService();
     if (this.getCheckpointingEnabled()) {
@@ -685,6 +696,10 @@ export class Config {
     return this.chatCompression;
   }
 
+  isInteractive(): boolean {
+    return this.interactive;
+  }
+
   async getGitService(): Promise<GitService> {
     if (!this.gitService) {
       this.gitService = new GitService(this.targetDir);