Remove provider-level tool validation, add validateToolCall helper

packages/ai/src/utils/validation.ts

@@ -27,6 +27,21 @@ if (!isBrowserExtension) {
 	}
 }
 
+/**
+ * Finds a tool by name and validates the tool call arguments against its TypeBox schema
+ * @param tools Array of tool definitions
+ * @param toolCall The tool call from the LLM
+ * @returns The validated arguments
+ * @throws Error if tool is not found or validation fails
+ */
+export function validateToolCall(tools: Tool[], toolCall: ToolCall): any {
+	const tool = tools.find((t) => t.name === toolCall.name);
+	if (!tool) {
+		throw new Error(`Tool "${toolCall.name}" not found`);
+	}
+	return validateToolArguments(tool, toolCall);
+}
+
 /**
  * Validates tool call arguments against the tool's TypeBox schema
  * @param tool The tool definition with TypeBox schema