chore: tool definition without zod (#873)

src/tools/tool.ts

@@ -14,13 +14,15 @@
  * limitations under the License.
  */
 
+import { zodToJsonSchema } from 'zod-to-json-schema';
+
 import type { z } from 'zod';
 import type { Context } from '../context.js';
 import type * as playwright from 'playwright';
 import type { ToolCapability } from '../../config.js';
 import type { Tab } from '../tab.js';
 import type { Response } from '../response.js';
-import type { ToolSchema } from '../mcp/server.js';
+import type { ToolDefinition } from '../mcp/server.js';
 
 export type FileUploadModalState = {
   type: 'fileChooser';
@@ -36,6 +38,28 @@ export type DialogModalState = {
 
 export type ModalState = FileUploadModalState | DialogModalState;
 
+export type ToolSchema<Input extends z.Schema> = {
+  name: string;
+  title: string;
+  description: string;
+  inputSchema: Input;
+  type: 'readOnly' | 'destructive';
+};
+
+export function toToolDefinition(tool: ToolSchema<any>): ToolDefinition {
+  return {
+    name: tool.name,
+    description: tool.description,
+    inputSchema: zodToJsonSchema(tool.inputSchema, { strictUnions: true }) as ToolDefinition['inputSchema'],
+    annotations: {
+      title: tool.title,
+      readOnlyHint: tool.type === 'readOnly',
+      destructiveHint: tool.type === 'destructive',
+      openWorldHint: true,
+    },
+  };
+}
+
 export type Tool<Input extends z.Schema = z.Schema> = {
   capability: ToolCapability;
   schema: ToolSchema<Input>;