Get invoice
Get a single invoice by ID. --- **Related endpoints** - `PUT /invoices/external/batch` — Batch upsert invoices by external ID - `GET /invoices` — List invoices - `POST /invoices` — Create invoice - `PATCH /invoices/{id}` — Update invoice - `DELETE /invoices/{id}` — Delete invoice - `POST /invoices/{id}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund invoice - `POST /invoices/{id}/reject` — Reject invoice
Get a single invoice by ID.
Related endpoints
PUT /invoices/external/batch— Batch upsert invoices by external IDGET /invoices— List invoicesPOST /invoices— Create invoicePATCH /invoices/{id}— Update invoiceDELETE /invoices/{id}— Delete invoicePOST /invoices/{id}/margin-estimate— Estimate invoice net by payment railPOST /invoices/{id}/refund— Refund invoicePOST /invoices/{id}/reject— Reject invoice
Your RevKeen merchant API key. Create and manage keys in Dashboard → Settings → Developer. Use rk_sandbox_* for staging/test and rk_live_* for production. The same key may be sent as Authorization: Bearer <key> if that suits your HTTP client better. A missing, invalid, expired, or revoked key returns 401 with a WWW-Authenticate: Bearer challenge; a valid key without the required scope returns 403.
In: header
Path Parameters
uuidResponse Body
application/json
application/json
application/json
curl "https://api.revkeen.com/v2/invoices/00000000-0000-0000-0000-000000000000" \
-H "x-api-key: $REVKEEN_API_KEY"{ "data": { "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08", "customer_uuid": "e7eefd45-cb13-4c62-b229-e5bbc1362123", "invoice_number": "string", "total_minor": 0, "currency": "string", "allowed_methods": [ "string" ], "status": "string", "due_date": "string", "custom_fields": {}, "external_source": "string", "external_type": "string", "external_id": "string", "subscription_terms": { "collection_method": "charge_automatically", "start_mode": "when_paid", "start_date": "string", "duration_type": "until_cancelled", "duration_count": 1, "end_date": "string", "first_payment_behavior": "charge_first_cycle_now" }, "created_at": "2019-08-24T14:15:22Z", "updated_at": "2019-08-24T14:15:22Z" }, "requestId": "string"}Finalize an invoice POST
Finalizes a draft invoice, locking it for payment. Assigns invoice number and generates public token. After finalization, financial fields become immutable. --- **Related endpoints** - `PUT /invoices/external/batch` — Batch upsert invoices by external ID - `GET /invoices` — List invoices - `POST /invoices` — Create invoice - `GET /invoices/{id}` — Get invoice - `PATCH /invoices/{id}` — Update invoice - `DELETE /invoices/{id}` — Delete invoice - `POST /invoices/{id}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund invoice **Common errors** - `400 invalid_request` — malformed payload or failed validation. - `404 resource_missing` — the referenced resource does not exist or is not visible to your key. **Idempotency** Pass an `Idempotency-Key` header (UUID v4 recommended) to make retries safe. Keys are valid for 24 hours; see [the idempotency guide](/docs/fundamentals/idempotency).
List invoices GET
List invoices with pagination and filtering. --- **Related endpoints** - `PUT /invoices/external/batch` — Batch upsert invoices by external ID - `POST /invoices` — Create invoice - `GET /invoices/{id}` — Get invoice - `PATCH /invoices/{id}` — Update invoice - `DELETE /invoices/{id}` — Delete invoice - `POST /invoices/{id}/margin-estimate` — Estimate invoice net by payment rail - `POST /invoices/{id}/refund` — Refund invoice - `POST /invoices/{id}/reject` — Reject invoice **Pagination** Offset-based with `limit` (default 25, max 100) and `offset`. The response `pagination` block includes `total` and `hasMore`. See [the pagination guide](/docs/fundamentals/pagination) for SDK auto-paging helpers.