Check User's Saved Tracks

GET/me/tracks/contains

Check if one or more tracks is already saved in the current Spotify user's 'Your Music' library.

ids: string

A comma-separated list of the Spotify IDs. For example: ids=4iV5W9uYEdYUVa79Axb7Rh,1301WleyT98MSxVHPZCA6M. Maximum: 50 IDs.

curl https://api.spotify.com/v1/me/tracks/contains \
    -H "Authorization: Bearer $SPOTIFY_ACCESS_TOKEN"

[
  false,
  true
]

[
  false,
  true
]