diff --git a/schema/schema.json b/schema/schema.json
index ec5c4d2..c46e0f0 100644
--- a/schema/schema.json
+++ b/schema/schema.json
@@ -1984,6 +1984,12 @@
                             },
                             "type": "object"
                         },
+                        "required": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        },
                         "type": {
                             "const": "object",
                             "type": "string"
diff --git a/schema/schema.ts b/schema/schema.ts
index 6492f62..b9fb9b9 100644
--- a/schema/schema.ts
+++ b/schema/schema.ts
@@ -695,6 +695,7 @@ export interface Tool {
   inputSchema: {
     type: "object";
     properties?: { [key: string]: object };
+    required?: string[];
   };
 }