All answers
Pinterest official API vs Social Fetch — which should I use?
Use Pinterest's official APIs when you need publishing, ads, or authenticated board management for users who authorize your app. Use Social Fetch when you need public pin search, pin detail, and board enrichment without building a Pinterest OAuth app — especially when those rows must sit next to Instagram and TikTok in one warehouse schema.
Read more
This answer comes from Pinterest data API, which covers the full detail, endpoints and pricing in credits.