# reaper-osc

> Controls Cockos Reaper using OSC

Latest version **0.9.0** (published 2026-03-22) · MIT license · 0 weekly downloads

## Install

```sh
npm install reaper-osc
pnpm add reaper-osc
yarn add reaper-osc
bun add reaper-osc
```

## Health

**Score 60/100 (C)** — status: stable.

Positive: has types; no vulnerabilities; has provenance; high quality score.

Warnings: low downloads; no esm support; pre 1.0.

## Facts

| | |
|---|---|
| Version | 0.9.0 |
| Published | 2026-03-22 |
| First published | 2021-06-06 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Dependencies | 3 |
| Unpacked size | 369.7 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| Author | Ben Simpson |
| Maintainers | lykaiosnz |
| Keywords | reaper, osc, daw, sound, control, surface, logic |

## Links

- npm: https://www.npmjs.com/package/reaper-osc
- Repository: https://github.com/LykaiosNZ/reaper-osc.js
- Homepage: https://github.com/LykaiosNZ/reaper-osc.js#readme
- Issues: https://github.com/LykaiosNZ/reaper-osc.js/issues
- npm.io page: https://npm.io/package/reaper-osc

## Dependencies (3)

- [osc](https://npm.io/package/osc.md) ^2.4.1
- [ste-signals](https://npm.io/package/ste-signals.md) ^2.1.7
- [ste-simple-events](https://npm.io/package/ste-simple-events.md) ^2.1.7

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## Recent versions

- 0.9.0 (latest) — 2026-03-22
- 0.8.0 — 2026-03-21
- 0.7.0 — 2026-03-21
- 0.5.3 — 2025-03-15
- 0.5.2 — 2025-03-07
- 0.5.1 — 2025-03-07
- 0.5.0 — 2024-03-21
- 0.4.0 — 2024-03-19
- 0.3.1 — 2024-03-18
- 0.3.0 — 2024-03-18
- 0.2.0 — 2021-11-18
- 0.1.2 — 2021-06-06
- 0.1.1 — 2021-06-06

## README

# reaper-osc

A Node.js library for controlling Cockos Reaper using Open Sound Control (OSC).

## API Reference

You can find the API documentation [here](https://lykaiosnz.github.io/reaper-osc.js/)

## Installation

Yarn: `yarn add reaper-osc`
npm: `npm i reaper-osc`

## Basic usage

```javascript
import {Reaper} from 'reaper-osc';

var reaper = new Reaper();

// Start listening for messages
await reaper.start()

// Subscribe to state changes
reaper.tracks[0].onPropertyChanged('isMuted', () => {
  console.log(`Track 1 was ${reaper.tracks[0].isMuted ? 'muted' : 'unmuted'}`);
});

reaper.transport.play();
reaper.tracks[0].mute();
reaper.tracks[0].unmute();
```

---
_Source: https://npm.io/package/reaper-osc · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._