plaid-transaction-sync

Use the Plaid /transactions/sync API with cursor paging to fetch incremental updates for added, modified, and removed transactions. Persist the next_cursor after looping until has_more is false to avoid full history replays on subsequent syncs.

Plaid transaction deduplication handles pending-to-posted transitions by tracking added, modified, and removed transactions through the /transactions/sync endpoint. The API provides specific arrays for each category, enabling you to update your database without duplicating pending entries.

The best way to handle has_more pagination is to loop through /transactions/sync requests, passing the returned next_cursor each time, until has_more returns false. You must persist the final next_cursor to resume incremental syncs later without data gaps.

Webhooks are not strictly required but are recommended to trigger Plaid transaction synchronization efficiently. Using webhooks avoids constant polling by prompting your app to call /transactions/sync only when new transaction data is available.

Yes, you can reuse a Plaid sync cursor across different sessions if you persist it in a storage mechanism. Retrieving and passing this stored cursor to /transactions/sync allows you to fetch only the newly added, modified, or removed transactions since the last sync.