Payments connector

Square + Backfill

Import Square payments and refunds with OAuth and verified webhook events.

From provider data to clean books.

Backfill keeps each connection isolated, checkpoints every stream, and normalizes supported records into the same canonical accounting shapes used across the platform. Review source evidence and sync health without maintaining a separate ingestion stack.

Data coverage

EventsPaymentsRefunds

Built on the Backfill connector runtime

First-party integrations use the same typed SDK, secret store, OAuth support, webhook verification, sync checkpoints, and canonical ingest APIs available to your team.

Explore the connector architecture →

Put Square on the same ledger as everything else.

Tell us about your stack and the workflows you want Backfill to own.

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