# Online Payment

## Get the Trustap fee for an online transaction

 - [GET /charge](https://docs.trustap.com/apis/openapi/online-payment/basic.getcharge.md): This returns the Trustap fee, in the currency's smallest unit,
for a transaction involving goods with the supplied price. See
[the Stripe
documentation](https://stripe.com/docs/currencies#zero-decimal)
for more details.

## Update the description, currency, price and/or charge of an online transaction

 - [PATCH /transactions/{transaction_id}](https://docs.trustap.com/apis/openapi/online-payment/updatetransaction.md)

## Enable the seller to accept payment for an online transaction

 - [POST /transactions/{transaction_id}/accept_payment](https://docs.trustap.com/apis/openapi/online-payment/basic.acceptpayment.md): This endpoint lets the seller accept payment and is accessible only if the seller
has granted a feature require_seller_acceptance.
Offline access is allowed for this endpoint when the user has
granted the basic_tx:offline_accept_payment scope to the client
that is performing the request.

## Enable payment acceptance for the seller using Trustap-User for an online transaction

 - [POST /transactions/{transaction_id}/accept_payment_with_guest_seller](https://docs.trustap.com/apis/openapi/online-payment/basic.acceptpaymentwithguestseller.md): This endpoint allows payment acceptance for the seller specified in the
header as Trustap-User.

## Get bank transfer details for an online transaction which payment method is bank_transfer

 - [GET /transactions/{transaction_id}/bank_transfer_details](https://docs.trustap.com/apis/openapi/online-payment/basic.getbanktransferdetails.md)

## Get the Trustap fee for an online transaction

 - [GET /transactions/{transaction_id}/charge](https://docs.trustap.com/apis/openapi/online-payment/basic.getchargefortransaction.md): This returns the Trustap fee, in the currency's smallest unit,
for a transaction involving goods with the supplied price. See
[the Stripe
documentation](https://stripe.com/docs/currencies#zero-decimal)
for more details.

## Set the payment method to be used for this online transaction

 - [POST /transactions/{transaction_id}/set_payment_method](https://docs.trustap.com/apis/openapi/online-payment/basic.setpaymentmethodfortransaction.md): Different payment methods incur different rates, so the payment
method to be used for a transaction must be set before the
payment is made. This requires retrieving the charge associated
with the payment method using
GET /transactions/{transaction_id}/charge, and passing the
generated charge as a parameter to this endpoint.