diff --git a/apps/makeosc/src/main.js b/apps/makeosc/src/main.js
index f14f960..4931cc5 100755
--- a/apps/makeosc/src/main.js
+++ b/apps/makeosc/src/main.js
@@ -13,8 +13,11 @@ program.addOption(new Option('--address <address>', 'OSC address').makeOptionMan
 program.addOption(new Option('--args <args...>', 'osc args').default([]));
 program.addOption(new Option('--slip', 'slip encode message').default(false));
 program.addOption(new Option('--types <types...>', 'osc arg types').choices(['s', 'i', 'f', 'b']).default([]));
+program.addOption(
+  new Option('-f --format <format>', 'output format').choices(['bytes', 'json', 'f', 'b']).default('bytes')
+);
 program.action((options) => {
-  const { address, args, types } = options;
+  const { address, args, types, format } = options;
 
   const typedArgs = args?.map((rawArg, index) => {
     const argType = types[index] || 's';
@@ -25,16 +28,20 @@ program.action((options) => {
     };
   });
 
-  let oscMsgBuffer = osc.messageToBuffer({
+  const oscMsg = {
     address,
     args: typedArgs,
-  });
+  };
 
-  if (options.slip) {
-    oscMsgBuffer = slip.encode(oscMsgBuffer);
+  if (format === 'json') {
+    process.stdout.write(JSON.stringify(oscMsg));
+  } else if (format === 'bytes') {
+    let oscMsgBuffer = osc.messageToBuffer(oscMsg);
+    if (options.slip) {
+      oscMsgBuffer = slip.encode(oscMsgBuffer);
+    }
+    process.stdout.write(oscMsgBuffer);
   }
-
-  process.stdout.write(oscMsgBuffer);
 });
 program.parse();