add experimental-skills flag to enable skills feature

packages/cli/src/config/config.ts

@@ -112,6 +112,7 @@ export interface CliArgs {
   allowedMcpServerNames: string[] | undefined;
   allowedTools: string[] | undefined;
   experimentalAcp: boolean | undefined;
+  experimentalSkills: boolean | undefined;
   extensions: string[] | undefined;
   listExtensions: boolean | undefined;
   openaiLogging: boolean | undefined;
@@ -307,6 +308,11 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
           type: 'boolean',
           description: 'Starts the agent in ACP mode',
         })
+        .option('experimental-skills', {
+          type: 'boolean',
+          description: 'Enable experimental Skills feature',
+          default: false,
+        })
         .option('channel', {
           type: 'string',
           choices: ['VSCode', 'ACP', 'SDK', 'CI'],
@@ -951,6 +957,7 @@ export async function loadCliConfig(
     maxSessionTurns:
       argv.maxSessionTurns ?? settings.model?.maxSessionTurns ?? -1,
     experimentalZedIntegration: argv.experimentalAcp || false,
+    experimentalSkills: argv.experimentalSkills || false,
     listExtensions: argv.listExtensions || false,
     extensions: allExtensions,
     blockedMcpServers,

packages/cli/src/gemini.test.tsx

@@ -461,6 +461,7 @@ describe('gemini.tsx main function kitty protocol', () => {
       allowedMcpServerNames: undefined,
       allowedTools: undefined,
       experimentalAcp: undefined,
+      experimentalSkills: undefined,
       extensions: undefined,
       listExtensions: undefined,
       openaiLogging: undefined,

packages/core/src/config/config.ts

@@ -307,6 +307,7 @@ export interface ConfigParameters {
   extensionContextFilePaths?: string[];
   maxSessionTurns?: number;
   sessionTokenLimit?: number;
+  experimentalSkills?: boolean;
   experimentalZedIntegration?: boolean;
   listExtensions?: boolean;
   extensions?: GeminiCLIExtension[];
@@ -461,6 +462,7 @@ export class Config {
     | undefined;
   private readonly cliVersion?: string;
   private readonly experimentalZedIntegration: boolean = false;
+  private readonly experimentalSkills: boolean = false;
   private readonly chatRecordingEnabled: boolean;
   private readonly loadMemoryFromIncludeDirectories: boolean = false;
   private readonly webSearch?: {
@@ -560,6 +562,7 @@ export class Config {
     this.sessionTokenLimit = params.sessionTokenLimit ?? -1;
     this.experimentalZedIntegration =
       params.experimentalZedIntegration ?? false;
+    this.experimentalSkills = params.experimentalSkills ?? false;
     this.listExtensions = params.listExtensions ?? false;
     this._extensions = params.extensions ?? [];
     this._blockedMcpServers = params.blockedMcpServers ?? [];
@@ -1080,6 +1083,10 @@ export class Config {
     return this.experimentalZedIntegration;
   }
 
+  getExperimentalSkills(): boolean {
+    return this.experimentalSkills;
+  }
+
   getListExtensions(): boolean {
     return this.listExtensions;
   }
@@ -1356,7 +1363,9 @@ export class Config {
     };
 
     registerCoreTool(TaskTool, this);
-    registerCoreTool(SkillTool, this);
+    if (this.getExperimentalSkills()) {
+      registerCoreTool(SkillTool, this);
+    }
     registerCoreTool(LSTool, this);
     registerCoreTool(ReadFileTool, this);