403 Forbidden on Add Tracks to Playlist API despite valid scopes

soundsdj — Wed, 20 May 2026 19:15:18 GMT

I have a Next.js app hosted on Vercel.

The app successfully:
- Authenticates user
- Returns playlist-modify-private
- Returns playlist-modify-public
- Returns user-read-private
- Creates playlists successfully
- Searches tracks successfully

However:

POST /v1/playlists/{playlist_id}/tracks

always returns:

403 Forbidden

The playlist is owned by the authenticated user.
The same token successfully creates the playlist.

Track URIs are valid Spotify track URIs.

Example failing endpoint:
POST https://api.spotify.com/v1/playlists/{playlist_id}/tracks

Request body:
{
"uris": [
"spotify:track:320lwWuMpZ6b0aN2RZ0eMS"
]
}

Any ideas why Spotify allows playlist creation but blocks adding tracks?

Re: 403 Forbidden on Add Tracks to Playlist API despite valid scopes

Ximzend — Wed, 20 May 2026 19:23:19 GMT

Hi @soundsdj

You should use items instead of tracks. This also applies to episodes, shows, albums, and audiobooks.

Look for all the changes to the API in this page.

Cheers!

topic 403 Forbidden on Add Tracks to Playlist API despite valid scopes in Spotify for Developers

403 Forbidden on Add Tracks to Playlist API despite valid scopes

Re: 403 Forbidden on Add Tracks to Playlist API despite valid scopes