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Spotify Web API vs Social Fetch — which should I use?
Use Spotify Web API when you need official quotas, playback, user-authorized features, or playlist management. Use Social Fetch when you want public artist/album/track enrichment without standing up a Spotify developer app, or when you already normalize social and music data through Social Fetch's shared envelope across platforms.
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This answer comes from Spotify data API, which covers the full detail, endpoints and pricing in credits.