Strimz. Stablecoin billing infrastructure

Create

POST /v1/invoices
{
  "customerName": "Acme Inc.",
  "customerEmail": "ap@acme.com",
  "currency": "USDC",
  "lineItems": [
    { "description": "Hosting", "quantity": 1, "unitAmount": "50000000" },
    { "description": "Support", "quantity": 2, "unitAmount": "10000000" }
  ],
  "note": "Net 14",
  "dueInDays": 14
}

Returns:

{
  "id": "inv_xyz",
  "number": "2026-0001",
  "subtotal": "70000000",
  "total": "70000000",
  "currency": "USDC",
  "status": "draft",
  "sessionId": "sess_xyz",
  "dueAt": "2026-05-13T...",
  "lineItems": [...],
  ...
}

Send

POST /v1/invoices/{id}/send

Emails the customer. Requires customerEmail to be set; returns 403 otherwise.

Void

POST /v1/invoices/{id}/void

Cannot void a paid invoice. Issue a refund instead. Voiding cancels the backing payment session.

Read

GET  /v1/invoices/{id}
GET  /v1/invoices?status=overdue

Lifecycle

draft  →  sent  →  paid
              ↘
               overdue  →  void

Daily cron flips invoices past dueAt to overdue and fires invoice.overdue.

Webhook events

Event	Fires when
`invoice.created`	A new invoice was created
`invoice.sent`	The invoice email was delivered
`invoice.paid`	The backing session confirmed
`invoice.overdue`	dueAt passed without payment

Invoices