diff --git a/src/cli.cpp b/src/cli.cpp
index e1af222..5b11d96 100644
--- a/src/cli.cpp
+++ b/src/cli.cpp
@@ -8,18 +8,49 @@
 using namespace nlohmann;
 using namespace nlohmann::json_schema;
 
-int main(int argc, char *argv[])
+class main_cli : public CLI::App
 {
 	std::ifstream schema_input;
 	std::ifstream object_input;
+	// TODO: Export this as a built-in loader
+	static void loader(const json_uri &uri, json &schema)
+	{
+		std::string filename = "./" + uri.path();
+		std::ifstream lf(filename);
+		if (!lf.good())
+			throw std::invalid_argument("could not open " + uri.url() + " tried with " + filename);
+		try {
+			lf >> schema;
+		} catch (const std::exception &e) {
+			throw e;
+		}
+	}
 
-	CLI::App app{"Json schema validator", "json-validator"};
-	// TODO: Move to a generated header file
-	app.set_version_flag("--version", "2.2.0");
-	app.add_option("schema", schema_input, "JSON schema of the object")
-	    ->check(CLI::ExistingFile);
-	app.add_option("object", "JSON object to validate")
-	    ->check(CLI::ExistingFile);
+public:
+	json schema;
+	json object;
+	json_validator validator;
+	main_cli()
+	    : CLI::App{"Json schema validator", "json-validator"},
+	      validator{loader, default_string_format_check}
+	{
+		// TODO: Move to a generated header file
+		set_version_flag("--version", "2.2.0");
+		add_option("schema", schema_input, "JSON schema of the object")
+		    ->check(CLI::ExistingFile);
+		add_option("object", object_input, "JSON object to validate")
+		    ->check(CLI::ExistingFile);
+	}
+	void validate()
+	{
+		validator.set_root_schema(schema);
+		validator.validate(object);
+	}
+};
+
+int main(int argc, char *argv[])
+{
+	main_cli app{};
 
 	try {
 		app.parse(argc, argv);
@@ -27,13 +58,7 @@ int main(int argc, char *argv[])
 		return app.exit(e);
 	}
 
-	json schema{};
-	json object{};
-	if (!schema_input.good())
-		throw std::invalid_argument("could not read schema");
-	if (!object_input.good())
-		throw std::invalid_argument("could not read object");
-	schema_input >> schema;
-	object_input >> object;
+	app.validate();
+
 	return 0;
 }