create_journal_entry

Create a vendor bill (lines take customername)

Pay bills and apply vendor credits (the QBO "check" / pay-bills flow)

Create a bank deposit (lines take entityname/entitytype)

Create an expense (Cash, Check, or Credit Card; payee may be a vendor, customer, or employee)

Create an invoice with item lines (customer required)

Create a sales receipt with item lines

Move money between two of the company's own accounts (bank↔bank, credit-card paydown)

Create a vendor credit (lines take customername)

createbill / editbill, createexpense / editexpense, createvendorcredit / editvendorcredit lines

Delete any transaction (journal entry, bill, invoice, deposit, sales receipt, expense, vendor credit, bill payment)

Modify an existing bill

Modify an existing deposit (lines take entityname/entitytype)

Modify an existing expense

Modify an existing invoice

Modify an existing journal entry

Modify an existing sales receipt

Modify an existing vendor credit

Balance Sheet report

Fetch a bill by ID

Fetch a bill payment by ID; flags unapplied amounts

Get connected company information

Fetch a deposit by ID

Fetch an expense by ID

Fetch an invoice by ID

Fetch a journal entry by ID

Profit & Loss report (by month, department, class, etc.)

Any of 24 other QuickBooks reports — A/R and A/P aging, customer and vendor balances, transaction lists, general ledger, journal, sales by customer/item/class/department, cash flow, and the detail variants

Fetch a sales receipt by ID

Trial Balance report (flags: true adds a close-review pass for wrong-side and uncategorized/suspense balances)

Fetch a vendor credit by ID

List chart of accounts with filtering

one and it is set or replaced;

the parameter and a line addressed by lineid keeps the entity it

Set up OAuth credentials (local mode only)

Run SQL-like queries against any QuickBooks entity

All transactions affecting a specific account (13 posting entity types, paginated, optional sub-account rollup; see docs/entity-coverage.md for limits)

Record a customer payment against open invoices (A/R counterpart to createbillpayment); each line defaults to the invoice's open balance

createbill, createvendorcredit, createbillpayment headers