diff --git a/mcp/server.go b/mcp/server.go
index b6d7b10..b3ea43b 100644
--- a/mcp/server.go
+++ b/mcp/server.go
@@ -31,7 +31,7 @@
 }
 
 // AddTool registers a new tool with the server
-func (s *Server) AddTool(name, description string, inputSchema map[string]interface{}, handler func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error)) error {
+func (s *Server) AddTool(name, description string, inputSchema map[string]any, handler func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error)) error {
 	if name == "" {
 		return fmt.Errorf("tool name cannot be empty")
 	}