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POST
/
invoices
Create an invoice
curl --request POST \
  --url https://api.alguna.io/invoices \
  --header 'Alguna-Version: <alguna-version>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "currency": "USD",
  "customer_id": "<string>",
  "billing_period_end": "2023-11-07T05:31:56Z",
  "billing_period_start": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "issue_date": "2023-11-07T05:31:56Z",
  "line_items": [
    {
      "quantity": "1",
      "unit_price": "100.00",
      "description": "<string>",
      "product_id": "<string>"
    }
  ],
  "purchase_order_number": "<string>",
  "status": "draft"
}
'
{
  "amount_paid": "0.00",
  "amount_remaining": "110.00",
  "billing_period": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "currency": "USD",
  "customer_id": "<string>",
  "description": "<string>",
  "id": "<string>",
  "line_items": [
    {
      "description": "<string>",
      "id": "<string>",
      "is_editable": true,
      "quantity": "1",
      "total_price": "100.00",
      "unit_price": "100.00",
      "billing_period_end": "2023-11-07T05:31:56Z",
      "billing_period_start": "2023-11-07T05:31:56Z",
      "product_id": "<string>"
    }
  ],
  "status": "draft",
  "subtotal": "100.00",
  "tax": "10.00",
  "total": "110.00",
  "updated_at": "2023-11-07T05:31:56Z",
  "billing_period_end": "2023-11-07T05:31:56Z",
  "billing_period_start": "2023-11-07T05:31:56Z",
  "due_date": "2023-11-07T05:31:56Z",
  "external_id": "<string>",
  "external_provider": "<string>",
  "external_reference": "<string>",
  "external_url": "<string>",
  "invoicing_date": "2023-11-07T05:31:56Z",
  "issue_date": "2023-11-07T05:31:56Z",
  "paid_date": "2023-11-07T05:31:56Z",
  "purchase_order_number": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://alguna.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

API key authentication. Pass your API key as a Bearer token.

Headers

​
Alguna-Version
enum<string>
required
Available options:
2026-04-01
​
Idempotency-Key
string

A unique string used to ensure the request is processed exactly once. If you retry a request with the same idempotency key within 24 hours, the original response is returned without re-executing the operation.

Maximum string length: 255
Example:

"ik_a1b2c3d4e5f6"

Body

application/json
​
currency
string
required

ISO 4217 currency code

Example:

"USD"

​
customer_id
string
required

Customer to create the invoice for

​
billing_period_end
string<date-time> | null

End of the billing period

​
billing_period_start
string<date-time> | null

Start of the billing period

​
description
string | null

Invoice description or memo

​
issue_date
string<date-time> | null

Date to issue the invoice

​
line_items
object[]

Line items to include on the invoice

​
purchase_order_number
string | null

Purchase order number

​
status
enum<string> | null

Initial invoice status

Available options:
draft,
issued

Response

Success

​
amount_paid
string
required

Amount that has been paid

Example:

"0.00"

​
amount_remaining
string
required

Remaining amount due

Example:

"110.00"

​
billing_period
string
required

Formatted billing period string

​
created_at
string<date-time>
required

Timestamp when the invoice was created

​
currency
string
required

ISO 4217 currency code

Example:

"USD"

​
customer_id
string
required

Customer this invoice belongs to

​
description
string
required

Invoice description or memo

​
id
string
required

Unique identifier for the invoice

​
line_items
object[]
required

Line items on this invoice

​
status
enum<string>
required

Current status of the invoice

Available options:
draft,
upcoming,
pending_approval,
scheduled,
processing,
issuing,
issued,
void,
paid,
canceled,
overdue
​
subtotal
string
required

Sum of all line item totals before tax

Example:

"100.00"

​
tax
string
required

Total tax amount

Example:

"10.00"

​
total
string
required

Total amount including tax

Example:

"110.00"

​
updated_at
string<date-time>
required

Timestamp when the invoice was last updated

​
billing_period_end
string<date-time> | null

End of the billing period

​
billing_period_start
string<date-time> | null

Start of the billing period

​
due_date
string<date-time> | null

Date the invoice payment is due

​
external_id
string

Identifier in the external payment provider

​
external_provider
string

External payment provider name

​
external_reference
string

Customer-facing invoice reference number

​
external_url
string

URL to the invoice in the external system

​
invoicing_date
string<date-time> | null

Date the invoice is scheduled for processing

​
issue_date
string<date-time> | null

Date the invoice was issued

​
paid_date
string<date-time> | null

Date the invoice was paid

​
purchase_order_number
string | null

Purchase order number