Product
Connect your accounts, read-only
OpenBooks connects to your bank accounts and existing accounting systems on a read-only basis to categorize activity as it happens. It never initiates a payment or moves money, and never files or publishes anything without a human approval.
Read-only feeds into one immutable ledger.
Bank connections
Read-only account links keep the books current without granting payment access.
Accounting systems
Bring in activity from the tools you already use so nothing is double-entered.
Safe by construction
No outbound money movement is possible from OpenBooks — categorization and drafting only.
Read-only is a guarantee, not a preference
Handing bookkeeping software the ability to move money is a risk most organizations accept without noticing. OpenBooks does not ask for it. Account connections are established read-only, which means the credentials OpenBooks holds cannot originate a payment even if someone wanted them to.
This is worth being precise about, because "we would never" is a promise and "we cannot" is an architecture. The worst case for a compromised OpenBooks connection is disclosure of transaction history — not a transfer. For an organization whose treasurer is a volunteer and whose board turns over every year, that reduction in blast radius matters more than any feature.
Fits alongside what you already run
OpenBooks does not require you to abandon your existing accounting system. It reads activity from the tools you already use so nothing is entered twice, and it adds the layer those tools do not have: continuous categorization against the rules you file under, and an append-only record anyone can verify.
The practical result is that adopting OpenBooks is additive. Your existing books keep working; what changes is that the numbers coming out of them can now be independently checked.