Payment Link

With PagaSul, you can accept payments by sharing a link directly with your customer. No server-to-server API call is needed — the link is a URL with payment parameters in the query string. When the customer follows it, PagaSul renders the hosted checkout.

Here is a step-by-step description of the payment processing flow with the payment link.

How to integrate

1. Build the payment link

Construct a URL to https://checkout.pagasul.com/pay with your payment parameters as a query string. You can do this on the server or the client.

https://checkout.pagasul.com/pay
  ?client_id=123
  &client_payment_id=order_42
  &amount=150.00
  &currency=BRL
  &payer.id=user_1234
  &callback_url=https%3A%2F%2Fyour-site.com%2Fwebhook
  &payment_options.return_url=https%3A%2F%2Fyour-site.com%2Fthank-you

client_payment_id must be unique per payment in your system — it is used for idempotency.

To preselect a payment method, include payment_method=BR.PIX (or another code). Without it, the customer chooses on the checkout page. See Payment Methods for available codes and any additional required fields per method.

Full parameter list

Parameter	Type	Required	Description
client_id	integer	Yes	Your account identifier, provided upon integration
client_payment_id	string	Yes	Your payment ID, must be unique to the client_id used
payment_method	string	Optional	Preselected payment method code (see Supported payment methods section). If not passed, the customer will be presented with a form to select a method from those connected on your client_id
currency	string	Yes	Payment currency (see Supported payment methods section)
amount	decimal	Yes	Requested payment amount (for example: pass 12.34 for 12 dollars 34 cents amount)
payer.id	string	Yes	A unique identifier for a customer or customer account on your side. It is used to accumulate customer data and for anti-fraud protection
payer.is_trusted	boolean	Optional	If passed and "true" customer marked as trusted (for use please consult Pagasul representative)
payer.name	string	Optional	Customer name
payer.email	string	Optional	Customer email
payer.country	string	Optional	Customer country (alpha-2 code)
payer.state	string	Optional	Customer state
payer.city	string	Optional	Customer city
payer.address	string	Optional	Customer address
payer.phone	string	Optional	Customer phone
payer.language	string	Optional	Preferred language for customer
payer.cpf	string	Optional	Customer CPF (Cadastro de Pessoas Físicas) for Brazil payment methods. Can be passed in following formats: "231.002.999-00" or "23100299900"
payer.cuit	string	Optional	Customer CUIT (Unique Tax Identification Code) for Argentina payment methods. Can be passed in following formats: "30-69330706-2" or "30693307062"
payer.citizenship_card	string	Optional	Number of the Citizenship Card (Cédula de Ciudadanía) for Colombian/Ecuadorian payment methods
payer.nit	string	Optional	Unique Taxpayer Number (Número de Identificación Tributaria) for Colombian/Bolivian payment methods
payer.pas	string	Optional	Passport needed for Bolivian/Ecuadorian payment methods
payer.ce	string	Optional	Customer Identity card of Foreigners (Cédula de Extranjería) for Colombian payment methods
payer.ti	string	Optional	Customer identity document (Tarjeta de Identidad) for Colombian payment methods
payer.ci	string	Optional	Customer identity document (Cédula de Identidad) for Bolivia/Venezuela payment methods. For Venezuela it must start with letter V or E
payer.ruc	string	Optional	Ecuadorian taxpayer number (Registro Único de Contribuyente)
payer_account	object	Optional	Customer account data section
payer_account.bank_code	string	Optional	Payer bank code (Mandatoriness see in section Supported payment methods). One of bank code from list (see Bank Codes section)
payment_options.return_url	string	Optional	If passed, the customer will be returned to the specified URL after the payment is completed
payment_options.callback_url	string	Optional	If passed, the notification on payment status change will be sent to the specified URL

Also the full parameter list see Create payment link in the API Reference.

2. Share the link

Send the link to your customer via email, SMS, or embed it as a button in your UI. When the customer follows it, PagaSul opens the checkout page.

3. Handle the callback

When the payment is completed, PagaSul sends a POST to your callback_url. Verify the signature in the header, then check the status field:

Status	Meaning	Action
success	Payment completed	Fulfil the order
decline	Payment declined	Notify the customer
failed	Processing error	Contact PagaSul support

For all statuses and result codes, see Statuses & Codes. For the full callback structure, see Callbacks.

4. Return the customer

After checkout, PagaSul redirects the customer to payment_options.return_url. Use it to display a confirmation page. Do not use this redirect to determine payment outcome — use the callback for that.