# 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 's smallest unit,
for a transaction involving goods with the supplied . 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 .
Offline access is allowed for this endpoint when the user has
granted the  scope to the client
that is performing the request.


## Enable payment acceptance for the seller using  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 .


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


 - [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 's smallest unit,
for a transaction involving goods with the supplied . See
[the Stripe
documentation](https://stripe.com/docs/currencies#zero-decimal)
for more details.


## Set the payment details and process a payment for this online transaction
with this user's balance


 - [POST /transactions/{transaction_id}/pay_with_balance](https://docs.trustap.com/apis/openapi/online-payment/basic.paywithbalancefortransaction.md)

## 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
, and passing the
generated charge as a parameter to this endpoint.