Balanced at commit
Debits equal credits for each asset in a transaction, enforced by the database at the moment it commits.
Financial infrastructure
Ledger
Double-entry ledger for money, credits and stock.
Available Free today Free today; access provisioned personally
What it is
A hosted double-entry ledger with an API. Every transaction balances, every entry is permanent and every balance can be proved, with the rules enforced by the database rather than only by application code. Free today.
Who it is for. Finance and engineering teams that keep books for money, credits or stock and want guarantees they can verify rather than trust.
- Double-entry
- PostgreSQL-native
- Multi-tenant
- Free today
What it does
Permanent journal
No edit or delete path exists on the journal; corrections are new, visible transactions.
Exact amounts
Whole minor units with a per-asset precision; approximate arithmetic never touches an amount.
No overdraft
Every account declares its floor; a movement that would breach it is refused, even under concurrent load.
Safe retries
Every write carries a key you choose; a retry after a timeout cannot move value twice.
Isolated clients
Row-level isolation inside the database, failing closed; give each of your own clients a ledger of their own.
Verified, not declared
Four internal audit gates, adversarial re-audits and continuous live probes, all published with their findings.
Machine-readable contract
An OpenAPI document, an API explorer and an llms.txt written for software agents.
Ready to look at Ledger?
The product site has the documentation and the way in. For procurement questions, a pilot or an integration, talk to us directly.