shell bones (#160)

* shell bones

* Merge remote-tracking branch 'origin/main' into shell_bones

* add line break

* another line break

* drop the log to avoid breaking terminals

* rename tool to be consistent with terminal

* fix build

packages/server/src/tools/shell.ts

@@ -0,0 +1,44 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import path from 'path';
+import fs from 'fs';
+import { Config } from '../config/config.js';
+import { BaseTool, ToolResult } from './tools.js';
+
+export interface ShellToolParams {
+  command: string;
+  description?: string;
+}
+
+export class ShellTool extends BaseTool<ShellToolParams, ToolResult> {
+  static Name: string = 'execute_bash_command';
+  private readonly rootDirectory: string;
+  private readonly config: Config;
+
+  constructor(rootDirectory: string, config: Config) {
+    const toolDisplayName = 'Shell';
+    const descriptionUrl = new URL('shell.md', import.meta.url);
+    const toolDescription = fs.readFileSync(descriptionUrl, 'utf-8');
+    const schemaUrl = new URL('shell.json', import.meta.url);
+    const toolParameterSchema = JSON.parse(fs.readFileSync(schemaUrl, 'utf-8'));
+    super(
+      ShellTool.Name,
+      toolDisplayName,
+      toolDescription,
+      toolParameterSchema,
+    );
+    this.config = config;
+    this.rootDirectory = path.resolve(rootDirectory);
+  }
+
+  async execute(_params: ShellToolParams): Promise<ToolResult> {
+    return {
+      llmContent: 'hello',
+      returnDisplay: 'hello',
+    };
+  }
+}