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API reference Invoicing

Invoices: Reads the invoice's pay-by-link state.

GET /api/invoicing/invoices/{id}/payment-link deprecated

Requires: Invoicing.Invoices, merchant scope.

Returns the absolute hosted-payment-page URL, when it lapses, the QR code URL and the backing session id. This read and the reissue below are the only endpoints that disclose the URL: it embeds a bearer credential, so it is deliberately absent from the invoice read and list payloads. The read never creates or rotates a link; re-send the invoice, or reissue the link, to mint a fresh one.

Example request

Every block below sends the same request. Replace {{BASE_URL}} with the address of the API you are calling and {{API_KEY}} with your own key.

The request body is a . See the Request body section below for its fields.

Code sample language

cURL
curl -X GET "{{BASE_URL}}/api/invoicing/invoices/{id}/payment-link" \
  -H "api-key: {{API_KEY}}"

PowerShell
$headers = @{
    'api-key' = '{{API_KEY}}'
}

$response = Invoke-RestMethod -Method GET -Uri '{{BASE_URL}}/api/invoicing/invoices/{id}/payment-link' `
    -Headers $headers

npm install @winkpg/winkpg-api

TypeScript (SDK)
import { Configuration, InvoicingApi } from '@winkpg/winkpg-api';

const api = new InvoicingApi(new Configuration({
  basePath: '{{BASE_URL}}',
  apiKey: '{{API_KEY}}',
}));

const { data } = await api.invoiceLifecycleGetPaymentLink("3fa85f64-5717-4562-b3fc-2c963f66afa6");

TypeScript (raw HTTP)
const response = await fetch('{{BASE_URL}}/api/invoicing/invoices/{id}/payment-link', {
  method: 'GET',
  headers: {
    "api-key": "{{API_KEY}}",
  },
});

const data = await response.json();

dotnet add package WinkPg.Api.Client

C# (SDK)
using WinkPg.Api.Client.Api;
using WinkPg.Api.Client.Client;

var config = new Configuration { BasePath = "{{BASE_URL}}" };
config.AddApiKey("api-key", "{{API_KEY}}");

var api = new InvoicingApi(config);
var result = await api.InvoiceLifecycleGetPaymentLinkAsync(Guid.Parse("3fa85f64-5717-4562-b3fc-2c963f66afa6"));

C# (raw HTTP)
using var http = new HttpClient { BaseAddress = new Uri("{{BASE_URL}}") };

var request = new HttpRequestMessage(new HttpMethod("GET"), "/api/invoicing/invoices/{id}/payment-link");
request.Headers.Add("api-key", "{{API_KEY}}");

var response = await http.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

pip install winkpg-api

Python (SDK)
import winkpg_api

configuration = winkpg_api.Configuration(host="{{BASE_URL}}")
configuration.api_key["ApiKey"] = "{{API_KEY}}"

with winkpg_api.ApiClient(configuration) as client:
    api = winkpg_api.InvoicingApi(client)
    result = api.invoice_lifecycle_get_payment_link("3fa85f64-5717-4562-b3fc-2c963f66afa6")

pip install requests

Python (raw HTTP)
import requests

headers = {
    "api-key": "{{API_KEY}}",
}

response = requests.request(
    "GET",
    "{{BASE_URL}}/api/invoicing/invoices/{id}/payment-link",
    headers=headers,
)
response.raise_for_status()
data = response.json()

Parameters

Name In Type Description
id required path string (uuid)
suppressNulls required query boolean If true, omit properties with null values.

Request body

application/json , required

Field Type Description

This request body has no documented fields.

Responses

200 The invoice's link state. An invoice with no payable link answers 200 with `hasPaymentLink` false rather than an error: sending without a link is a designed outcome (no resolvable hosted page, an ambiguous merchant default, a biller that is not a merchant, nothing payable, or every payment-method feature off), as is the invalidation that follows full payment.

Body: InvoicePaymentLinkInfoDto Each item has these fields.

Field Type Description
invoiceId required string (uuid) The invoice the link pays.
hasPaymentLink required boolean Whether the invoice currently carries a payment link at all. When `false`, every other link property is null and the invoice has no payable link to hand out.
paymentUrl required string Absolute, HTTPS hosted-payment-page URL for the payer. Null when `hasPaymentLink` is `false`. nullable
expiresAt required string (date-time) When the link stops working. Null when the invoice carries no link. nullable
isExpired required boolean Whether `expiresAt` is already in the past. Computed server-side so the caller never has to compare against a client clock. Always `false` when there is no link.
qrCodeUrl required string Public URL of the PNG QR code encoding `paymentUrl`. Null when the invoice has no link, or when QR generation was skipped or failed: generation is best-effort and never blocks a send, so a live link with no QR is a normal outcome rather than an error. nullable
hppSessionId required string (uuid) The hosted-payment-page session backing the link. Null for an invoice with no link, and for a pre-cutover invoice still on the legacy opaque token. Safe to log and to quote in a support conversation, unlike the URL. nullable
amountDue required number (double) Outstanding balance the link collects, in `currency`.
currency required string ISO 4217 currency code of `amountDue`. nullable
linkState required all of InvoicePaymentLinkState Whether the link still opens the payment page. `Spent` and `Revoked` come from the payment session behind the link; when that session cannot be read, the state falls back to `Live` or `Expired` from `expiresAt` alone. `None` exactly when `hasPaymentLink` is `false`.
remainingDeclineRetries required integer (int32) How many more declined payment attempts the link can absorb and still reopen for the payer. Null when the link does not reopen after a decline, or when the payment session could not be read. nullable
lastAttemptAt required string (date-time) When a payer last attempted a payment on the link: the attempt that spent it, or the most recent declined attempt the link reopened after. Null when no attempt is recorded, or when the payment session could not be read. nullable

This response has no documented body fields.

403 The host has no usable public base URL to build the link against (`WinkPG.Invoicing:PaymentLinkBaseUrlNotConfigured`). A platform misconfiguration rather than an authorization refusal; the status is the historical one this code has always answered with.

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

401 Unauthorized

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

400 Bad Request

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

404 The invoice does not exist, or is not visible to this caller (`Invoicing:Biller:ForeignBillerNotAllowed`).

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

501 Not Implemented

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

500 Internal Server Error

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

default The request failed. The body carries the standard error envelope: a machine-readable `error.code`, a human-readable `error.message`, and `error.validationErrors` when the failure was a validation rejection. See the error-code reference in this document's description for the values `error.code` can take.

Body: RemoteServiceErrorResponse Each item has these fields.

Field Type Description
error required RemoteServiceErrorInfo

This response has no documented body fields.

429 The request was refused because a rate limit was exceeded. Wait at least the interval `Retry-After` names before retrying, then back off. Limits are tuned per deployment, so read the allowance from the response headers rather than assuming a fixed ceiling.

Body: RateLimitProblemDetails Each item has these fields.

Field Type Description
type required string The problem type identifier. Always the same value: the failure is the status code itself, so there is no sub-type for a caller to branch on. nullable
title required string A short, human-readable summary of the problem type. nullable
status required integer (int32) The HTTP status code, repeated in the body as the problem-details format defines.
detail required string A human-readable explanation of this occurrence of the problem. nullable
retryAfterSeconds required integer (int32) How long to wait before retrying, in whole seconds, carrying the same figure as the `Retry-After` header. Always at least one: a value of zero would invite an immediate retry that is certain to be rejected again.

This response has no documented body fields.

Errors

A failed request returns the platform error envelope. The error reference lists every value error.code can carry and shows the four response shapes.

Codes declared by Invoicing

Authentication

    Reconnecting to the server

    Could not reconnect

    This session has ended

    Attempt 1

    Your work on this page is still here. Retrying keeps it; reloading starts the page again.

    The server no longer holds this page's state, so it has to be loaded again.