Generate a finished, professional invoice PDF from JSON — recipient and line ite

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First payment auto-creates a wallet profile (token + API key in response headers); returning wallets get sequential invoice numbering and can save a sender letterhead. USD only.

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

POST https://stackbill.app/routes/x402/invoice-from-data

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "body": {
    "currency": "USD",
    "dueDate": "2026-08-01",
    "invoiceNumber": "INV-2026-042",
    "lineItems": [
      {
        "description": "Backend development",
        "quantity": 10,
        "unitPrice": 95
      },
      {
        "description": "Code review",
        "quantity": 2,
        "unitPrice": 120
      }
    ],
    "notes": "Payment due within 30 days.",
    "recipient": {
      "address": "456 Oak Ave, Chicago, IL 60601",
      "name": "Acme Corp"
    },
    "sender": {
      "address": "123 Main St, Springfield, IL 62701",
      "name": "Jane Doe Consulting"
    },
    "taxRate": 7.5
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "currency": {
              "description": "Optional; must be \"USD\" if present (v1 renders USD only)",
              "type": "string"
            },
            "dueDate": {
              "description": "Optional due date, YYYY-MM-DD",
              "type": "string"
            },
            "invoiceNumber": {
              "description": "Invoice number printed on the PDF. Optional when the request carries an X-StackApps-Token header from a previous paid call \u2014 the next sequential number for that wallet is used and returned in the X-Invoice-Number response header",
              "type": "string"
            },
            "lineItems": {
              "description": "At least one line item; amount per line, subtotal, tax and total are computed server-side",
              "items": {
                "properties": {
                  "description": {
                    "type": "string"
                  },
                  "quantity": {
                    "exclusiveMinimum": 0,
                    "type": "number"
                  },
                  "unitPrice": {
                    "minimum": 0,
                    "type": "number"
                  }
                },
                "required": [
                  "description",
                  "quantity",
                  "unitPrice"
                ],
                "type": "object"
              },
              "type": "array"
            },
            "notes": {
              "description": "Optional notes printed at the bottom of the invoice",
              "type": "string"
            },
            "recipient": {
              "description": "Who the invoice is billed to",
              "properties": {
                "address": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                }
              },
              "required": [
                "name",
                "address"
              ],
              "type": "object"
            },
            "sender": {
              "description": "Who the invoice is from. Optional for activated wallet profiles (send X-StackApps-Token) \u2014 the profile's saved name and address are used",
              "properties": {
                "address": {
                  "type": "string"
                },
                "name": {
                  "type": "string"
                }
              },
              "required": [
                "name",
                "address"
              ],
              "type": "object"
            },
            "taxRate": {
              "description": "Optional tax percent applied to the subtotal (e.g. 7.5)",
              "minimum": 0,
              "type": "number"
            },
            "template": {
              "description": "Optional PDF layout (default standard): legal = billing statement with a per-line Date column (populated when descriptions start with 'Work session on YYYY-MM-DD: '); creative = service/fee layout without hours-rate columns (service name taken from the text before ': ' in each description)",
              "enum": [
                "standard",
                "legal",
                "creative"
              ],
              "type": "string"
            }
          },
          "required": [
            "recipient",
            "lineItems"
          ]
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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