The Pinterest API v5 restricts access to user-specific data, allowing retrieval of only those pins that belong to the account linked to the access token. As of the latest documentation, there isn't an endpoint similar to the previous v3 API endpoint (/pidgets/pins/info/?pin_ids=) for fetching arbitrary pin data by ID from public accounts. The /v5/pins/{pin_id} endpoint can fetch details only for pins associated with the authenticated account, primarily for privacy and security compliance.

For broader access to Pinterest data or alternative ways to gather public pin information, Pinterest suggests exploring options within their Partner Program or Pinterest for Business API, which may provide additional tools for analytics or insights for business purposes. You can find more about the current limitations in Pinterest's official developer documentation.