Lua

Main scripting language in Go Money is Lua.

Go Money uses Lua Interpreter library Gopher-Lua All core LUA library features are supported (5.1).

Go Money also provides a set of additional methods to work with transactions and some debugging UI

Detailed information about available methods is available under the rules page in Go Money UI.

Example script that converts withdrawal to transfer.

if string.match(tx:title(), "CARD_PAYMENT.XTB") 
 and tx:sourceCurrency() == "USD" then
    local destinationAccount = helpers:getAccountByID(116)

    tx:transactionType(1) -- convert to transfer

    tx:destinationAccountID(destinationAccount.ID)
    tx:destinationCurrency(destinationAccount.Currency)
    tx:destinationAmount(
        math.abs(helpers:convertCurrency(
            tx:sourceCurrency(),
            destinationAccount.Currency,
            tx:sourceAmount()
        ))
    )
end