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API Reference
📋 Billing & SubscriptionsInvoices

List invoices

List invoices with pagination and filtering.

GET/invoices

List invoices with pagination and filtering.

Related endpoints

  • GET /invoices/{id}/usage-explain — Explain invoice usage charges
  • POST /invoices — Create invoice
  • GET /invoices/{id} — Get invoice
  • PATCH /invoices/{id} — Update invoice
  • GET /invoices/{id}/pdf — Get invoice PDF link
  • POST /invoices/{id}/finalize — Finalize an invoice
  • POST /invoices/{id}/void — Void an invoice
  • POST /invoices/{id}/send — Send an invoice

Common errors

  • 400 invalid_request — malformed payload or failed validation.

Pagination

Offset-based with limit (default 25, max 100) and offset. The response pagination block includes total and hasMore. See the pagination guide for SDK auto-paging helpers.

Authorization

x-api-key<token>

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

Query Parameters

status?string

Filter by invoice status

customerId?string

Filter by customer ID (UUID)

Formatuuid
limit?integer

Maximum number of results (1-100)

Range1 <= value <= 100
Default20
offset?|

Number of results to skip

Range0 <= value
Default0

Response Body

application/json

application/json

application/json

application/json

Stuck on an error response? Ask the RevKeen assistant to explain it.
curl -X GET "https://api.revkeen.com/v2/invoices?status=example&customerId=11111111-1111-4111-8111-111111111111" \
  -H "x-api-key: $REVKEEN_API_KEY"

Synthetic documentation data, validated against the response schema; not a live API result.

{  "data": [    {      "id": "f1a2b3c4-d5e6-4270-8a9b-0c1d2e3f4a21",      "customer_uuid": "c2a1e7d4-5b3f-4a8e-9d21-6f0b3e4c7a11",      "invoice_number": "INV-0042",      "total_minor": 5880,      "currency": "GBP",      "allowed_methods": [        "card"      ],      "status": "paid",      "due_date": "2026-04-16T10:00:00.000Z",      "external_source": null,      "external_type": null,      "external_id": null,      "hosted_invoice_url": "https://pay.revkeen.com/inv_example_0042",      "created_at": "2026-04-16T10:00:00.000Z",      "updated_at": "2026-04-16T10:02:00.000Z"    }  ],  "requestId": "req_7f3a9c2e5b1d"}

Put this endpoint to work

Manage invoices and orders