API referenceInvoices
Mark an invoice as paid
Needs a token with the write:invoices scope. Authentication
Try in Playground sends a real request to app.helvetly.com with a token you paste. It stays in this browser tab only (session storage) and goes to no one else.
POST
Records one payment for the whole amount due (default: today, bank transfer) and answers with the updated invoice. 409 invalid_state when nothing is due or the invoice is not open; 422 validation_failed on paid_on/method; 409 period_closed when the month of the date is closed in the books. Not idempotent: a retry answers 409 once paid. Undo with delete_payment. Send {} for the defaults.
bearerAuthheader
AuthorizationBearer <token>A personal API token, hvt_…, with scopes such as read:* or write:invoices
id*stringThe invoice's id.
application/json- body
Send {} to record the whole amount due, paid today by bank transfer.
paid_on?stringNot in the future; default today in the workspace's time zone.
Format
datemethod?stringDefault
"bank_transfer"Value in
"bank_transfer""cash""card""twint""other"OK
application/json- response
data*curl -X POST 'https://app.helvetly.com/api/v1/invoices/string/mark-paid' \ -H 'Content-Type: application/json' \ -d '{ "paid_on": "2026-11-10", "method": "bank_transfer"}'Example Response
{ "data": { "id": "string", "kind": "invoice", "type_code": "string", "number": "string", "status": "draft", "is_overdue": true, "client_id": "string", "client": { "id": "string", "number": 0, "name": "string" }, "quote": { "id": "string", "number": "string" }, "credited_invoice": { "id": "string", "number": "string" }, "issue_date": "2019-08-24", "due_date": "2019-08-24", "service_date": "2019-08-24", "service_date_end": "2019-08-24", "currency": "string", "language": "string", "vat_mode": "exclusive", "reference": "string", "tax_currency_rate": "string", "intro": "string", "footer": "string", "note": "string", "lines": [ { "id": "string", "position": 0, "description": "string", "quantity": "string", "unit": "string", "unit_price": "1234.50", "discount_percent": "string", "vat_category": "string", "vat_rate": "string", "amount": "1234.50", "vat_exemption_code": "string", "vat_exemption_reason": "string" } ], "discount_percent": "string", "subtotal": "1234.50", "discount_amount": "1234.50", "net_total": "1234.50", "vat_breakdown": [ { "category": "string", "rate": "string", "taxable_amount": "1234.50", "vat_amount": "1234.50" } ], "vat_total": "1234.50", "total": "1234.50", "rounding_amount": "1234.50", "payable_total": "1234.50", "prepaid_total": "1234.50", "prepayments": [ { "id": "string", "number": "string", "payable_total": "1234.50", "status": "string", "vat_breakdown": [ { "category": "string", "rate": "string", "taxable_amount": "1234.50", "vat_amount": "1234.50" } ] } ], "deducted_on": { "id": "string", "number": "string" }, "amount_paid": "1234.50", "amount_credited": "1234.50", "amount_due": "1234.50", "amount_refunded": "1234.50", "refund_due": "1234.50", "payment_methods": { "qr_bill": true, "revolut": true }, "payment": { "iban": "string", "reference_type": "string", "reference": "string", "qr_bill": true, "revolut_url": "string" }, "seller": { "name": "string", "street": "string", "street_number": "string", "apt": "string", "zip": "string", "city": "string", "country": "string", "vat_number": "string", "email": "string", "phone": "string", "electronic_address": { "scheme": "string", "id": "string" }, "registration_number": "string", "region": "string" }, "buyer": { "name": "string", "street": "string", "street_number": "string", "apt": "string", "zip": "string", "city": "string", "country": "string", "vat_number": "string", "email": "string", "phone": "string", "electronic_address": { "scheme": "string", "id": "string" }, "registration_number": "string", "region": "string" }, "payments": [ { "id": "string", "amount": "1234.50", "paid_on": "2019-08-24", "method": "bank_transfer", "note": "string", "created_at": "2019-08-24T14:15:22Z", "created_by": { "id": "string", "name": "string" } } ], "refunds": [ { "id": "string", "amount": "1234.50", "refunded_on": "2019-08-24", "method": "string", "note": "string", "created_at": "2019-08-24T14:15:22Z", "created_by": { "id": "string", "name": "string" } } ], "instalments": { "interval": "string", "items": [ { "seq": 0, "due_date": "2019-08-24", "amount": "1234.50", "effective": "1234.50", "paid": "1234.50", "open": "1234.50", "status": "string", "reference": "string" } ] }, "plan": { "id": "string", "seq": 0, "count": 0 }, "reminders_enabled": true, "issued_at": "2019-08-24T14:15:22Z", "sent_at": "2019-08-24T14:15:22Z", "created_at": "2019-08-24T14:15:22Z", "updated_at": "2019-08-24T14:15:22Z", "origin": "string", "source_document_id": "string" }}