List all Folio bank accounts with current balance, type (Card, Earmarks, Operational, Tax, Savings) and data-freshness timestamps.

Get the incoming (start of day) and outgoing (end of day) balance for an account on a given date.

List booked transactions in a date range, optionally scoped to one account. Amounts are decimal strings. Set includeMerchants to resolve merchant details (only supported when not scoped to an account).

Get a single transaction by its id, including attachments and ledger category.

List events — anything that is or will become a transaction (card authorizations, payments in flight, booked transactions). Use this to find items missing receipts, purpose or other documentation (complete=false).

Update purpose, note, participants and/or ledger category on an event. Omitted fields are unchanged; an empty string removes the value (ledger category cannot be removed, only overwritten). The event's 'complete' flag is re-evaluated against the ledger category's requirements.

Mark an event as complete (all documentation present) or remove a previously set completion. Note: another system may independently consider it complete.

Upload a receipt/invoice (PDF, PNG or JPEG file from the local filesystem) as an attachment on an event.

Download an attachment (receipt/invoice) to a local file. Type 'original' is the uploaded file, 'cropped' is auto-cropped, and 128x128/256x256/512x512 are square image thumbnails. Small images are also returned inline.

Get a ledger category by id: account number/name (Norsk Standardkontoplan NS4102), VAT code/rate, and which documentation (attachment, purpose, participants) is required for an event to be complete.

List payments in a date range with state (Draft, InProcess, Completed, Cancelled, Rejected, RetryingInsufficientFunds).

Get a single payment by id, including its current state.

Create a new payment. The payment is created as a Draft and must be approved/signed by the user in the Folio app before any money moves. Either kid or message may be set, not both. Foreign (non-NOK) payments require foreignPaymentInfo.

Cancel (soft-delete) a payment. It remains visible with status Cancelled and cannot be re-approved by the user.