Invoices
Get invoice detail
Retrieve a single invoice with its line items. Line items are computed from rated charges and include subscription fees, one-time fees, and usage charges.
AuthorizationBearer <token>
API key as Bearer token: Authorization: Bearer luc_live_...
In: header
Path Parameters
number*string
The invoice number (e.g. INV-2026-003).
Response Body
application/json
application/json
application/json
curl -X GET "https://api.lucius.finance/v1/billing/invoices/INV-2026-003"{
"object": "invoice",
"number": "INV-2026-003",
"contract": "acme-corp-2026",
"status": "draft",
"subtotal": 2500,
"tax": 0,
"total": 2500,
"currency": "USD",
"billing_period": {
"start": "2026-03-01",
"end": "2026-03-31"
},
"issued_date": "2026-03-01",
"due_date": "2026-03-15",
"paid_date": null,
"metrics": [
"revenue_amount_invoiced"
],
"line_items": [
{
"description": "Platform Subscription",
"quantity": 1,
"unit_price": 2000,
"amount": 2000
},
{
"description": "Usage Fee",
"quantity": 10000,
"unit_price": 0.05,
"amount": 500
}
]
}{
"error": "Missing API key"
}{
"error": "Not found"
}