The QR Invoice REST API provides various services for creation and processing of Swiss QR Invoices. This API is available as a Cloud Service but is also available as a self-hosted solution.
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https://rest.qr-invoice.cloud/
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/with-qr-reference
curl -i -X GET \
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/with-qr-reference \
-H 'X-API-Key: YOUR_API_KEY_HERE'
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/with-creditor-reference
curl -i -X GET \
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/with-creditor-reference \
-H 'X-API-Key: YOUR_API_KEY_HERE'
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/blank
curl -i -X GET \
https://rest.qr-invoice.cloud/v2/examples/swiss-payments-code/blank \
-H 'X-API-Key: YOUR_API_KEY_HERE'