diff --git a/packages/types/src/tpmjs.ts b/packages/types/src/tpmjs.ts
index e74820a..148ca17 100644
--- a/packages/types/src/tpmjs.ts
+++ b/packages/types/src/tpmjs.ts
@@ -90,17 +90,28 @@ export type TpmjsAiAgent = z.infer<typeof TpmjsAiAgentSchema>;
  * - returns: Tool return type - auto-extracted from tool
  * - aiAgent: AI agent guidance - auto-extracted from tool
  */
-export const TpmjsToolDefinitionSchema = z.object({
-  name: z.string().min(1, 'Tool name is required'),
-  // Optional - auto-extracted from tool if not provided
-  description: z.string().min(20, 'Description must be at least 20 characters').max(500).optional(),
-  // @deprecated - now auto-extracted from tool's inputSchema
-  parameters: z.array(TpmjsParameterSchema).optional(),
-  // @deprecated - now auto-extracted from tool
-  returns: TpmjsReturnsSchema.optional(),
-  // @deprecated - now auto-extracted from tool
-  aiAgent: TpmjsAiAgentSchema.optional(),
-});
+export const TpmjsToolDefinitionSchema = z
+  .object({
+    // New field name (preferred)
+    name: z.string().min(1).optional(),
+    // @deprecated - use 'name' instead. Kept for backward compatibility.
+    exportName: z.string().min(1).optional(),
+    // Optional - auto-extracted from tool if not provided
+    description: z
+      .string()
+      .min(20, 'Description must be at least 20 characters')
+      .max(500)
+      .optional(),
+    // @deprecated - now auto-extracted from tool's inputSchema
+    parameters: z.array(TpmjsParameterSchema).optional(),
+    // @deprecated - now auto-extracted from tool
+    returns: TpmjsReturnsSchema.optional(),
+    // @deprecated - now auto-extracted from tool
+    aiAgent: TpmjsAiAgentSchema.optional(),
+  })
+  .refine((data) => data.name || data.exportName, {
+    message: 'Either name or exportName is required',
+  });
 
 export type TpmjsToolDefinition = z.infer<typeof TpmjsToolDefinitionSchema>;