Apply credit to a specific invoice

Apply an available credit on your account to reduce an outstanding invoice amount. The API returns an invoiceId that you can then use to call POST /api/billing/pay.

Billing & Payments Invoices

Context

Used in the dashboard

/billing

Workflow links

Produces

invoiceId → data.invoiceId

POST /api/billing/pay
POST /api/billing/stripe-checkout

Related endpoints

POST /api/billing/invoice/{id} Get a copy of a specific invoice as PDF GET /api/billing/invoice/{id} Get detailed information about a specific invoice POST /api/billing/invoice/{id}/cancel Cancel a specific invoice

Path Parameters

id integer · min: 1 required Example: 46376

Unique id identifier

Headers

Accept Example

Content-Type Example

Body

required

application/json

amount string · enum required · Example: 130.00

130.00

2.50

29.10

4.41

90.45

Responses

200

data object required

data.amount string · enum required · Example: 130.00

130.00

2.50

29.10

4.41

90.45

data.invoiceId string required · Example: 46376

data.message string required · Example: Credit has been applied to invoice

Human-readable message.

requestId string required · Example: 2121ae20-bd9d-41e9-aeeb-5dd1dd1a24ba

Unique request identifier (UUID).

success boolean required · Example: true

True for successful responses.

timestamp string required · Example: 2026-02-10T00:00:00.000Z

ISO 8601 timestamp (UTC).

400

code string required · Example: BAD_REQUEST

Machine-readable error code.

error string required · Example: Bad Request

HTTP status title (e.g. 'Bad Request').

message string required · Example: Failed to apply credit

Human-readable message.

requestId string required · Example: 2121ae20-bd9d-41e9-aeeb-5dd1dd1a24ba

Unique request identifier (UUID).

timestamp string required · Example: 2026-02-10T00:00:00.000Z

ISO 8601 timestamp (UTC).

POST https://cloud.hostup.se/api/billing/invoice/{id}/apply-credit

For AI assistants

cURL

curl -X POST "https://cloud.hostup.se/api/billing/invoice/46376/apply-credit" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": "130.00"
  }'

Response

{
  "success": true,
  "timestamp": "2026-02-10T00:00:00.000Z",
  "requestId": "2121ae20-bd9d-41e9-aeeb-5dd1dd1a24ba",
  "data": {
    "message": "Credit has been applied to invoice",
    "invoiceId": "46376",
    "amount": "130.00"
  }
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "object",
      "properties": {
        "amount": {
          "type": "string",
          "enum": [
            "130.00",
            "2.50",
            "29.10",
            "4.41",
            "90.45"
          ]
        },
        "invoiceId": {
          "type": "string"
        },
        "message": {
          "type": "string",
          "description": "Human-readable message."
        }
      }
    },
    "requestId": {
      "type": "string",
      "description": "Unique request identifier (UUID)."
    },
    "success": {
      "type": "boolean",
      "description": "True for successful responses."
    },
    "timestamp": {
      "type": "string",
      "description": "ISO 8601 timestamp (UTC)."
    }
  }
}

Request Body Example 1

{
  "amount": "130.00"
}