NowPlaying

WebSocket API for getting the currently playing song on Spotify.

Production instance at https://spotify.antti.codes/

Todo

• Create ToS & Privacy Policy
• Do whatever the Spotify terms ask for
• Apply for extended quota mode to allow others to sign up
  • For now you can ask me I guess...

Documentation

Authentication

Open the website and login with Spotify.

Rest API

The REST API provides a single endpoint /api/np/:id which is meant for occasional data fetching and is therefore heavily ratelimited.

Websocket

Communication happens in JSON. op being the opcode and d being any data associated with the message. Example implementation can be found on my very own website.

The protocol

1. Connect to wss://spotify.antti.codes/
2. Server responds with opcode 1 and heartbeat_interval which is interval in milliseconds to send the heartbeat (opcode 3) in

{
  "op": 1,
  "d": {
    "heartbeat_interval": 15000
  }
}

{
  "op": 3
}

3. You respond with opcode 2 and user id string as data

{
  "op": 2,
  "d": "qgfht3wu1vo4ajn8skj9ugxem"
}

4. Server starts sending opcode 0 with the users now playing status

{
  "op": 0,
  "d": {
    "is_playing": false
  }
}

{
  "op": 0,
  "d": {
    "is_playing": true,
    "song": "Song name",
    "album": "Album name",
    "artist": "Artist name(s)",
    "album_art": "Album art url",
    "track_id": "Track id",
    "total": 223, // Total track length (seconds)
    "start": 1695837181 // Play start unix timestamp (seconds)
}

The server might also send opcode 4 with a message indicating an error. After sending opcode 4 the server will close the connection.

{
  "op": 4,
  "d": "No heartbeat received"
}