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# Create purchase

> Register a purchase from a supplier or a cash purchase, with VAT, cost account and payment. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/fiken/create_purchase

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Register a purchase from a supplier or a cash purchase, with VAT, cost account and payment.

Fiken MCP tools: https://cotlet.dev/docs/mcp/fiken.md

MCP tool: `fiken_write → create_purchase`

Access: write. Confirm: waits for the user's OK before it runs.

Registers one purchase like Registrer kjøp in Fiken: a supplier purchase (kjøp fra leverandør) or a cash purchase (kontantkjøp), with one or more lines of gross amount, VAT type and cost account. Attach a document with inbox_document_id. paid_from is bank_account, cash, out_of_pocket (Utlegg, paid by you personally) or unpaid; an unpaid purchase is paid later in Fiken. A booked purchase cannot be edited directly: Fiken cancels the booking and makes a new draft. Check list_purchases for the same invoice number first. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `kind` | enum | yes | supplier or cash_purchase. |
| `supplier_id` | integer | no | Contact ID from list_contacts. Required for supplier. |
| `date` | date | yes | Invoice or receipt date. |
| `invoice_number` | string | no | The supplier's invoice number, used to avoid booking a document twice. |
| `due_date` | date | no | Due date, if different from the invoice date. |
| `lines` | array | yes | Objects with description, gross_amount, vat_type (for example HIGH, MEDIUM, LOW or NONE) and expense_account. Several objects split the purchase. |
| `paid_from` | enum | no | bank_account, cash, out_of_pocket or unpaid. Default: unpaid. |
| `bank_account` | string | no | Account code from list_bank_accounts. Required for bank_account. |
| `payment_date` | date | no | Date of payment. Default: the purchase date. |
| `inbox_document_id` | integer | no | Document ID from list_inbox or upload_receipt. |
| `currency` | string | no | ISO 4217 code. Default: NOK. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "fiken_write",
    "arguments": {
      "operation": "create_purchase",
      "arguments": {
        "kind": "supplier",
        "supplier_id": 6120455,
        "date": "2026-10-09",
        "invoice_number": "88214",
        "due_date": "2026-10-23",
        "lines": [
          {
            "description": "Printer paper and toner",
            "gross_amount": 1250,
            "vat_type": "HIGH",
            "expense_account": "6800"
          }
        ],
        "paid_from": "bank_account",
        "bank_account": "1920:10001",
        "payment_date": "2026-10-09",
        "inbox_document_id": 3318240
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "purchase_id": 8820145,
    "kind": "supplier",
    "supplier": "Kontorbutikken AS",
    "date": "2026-10-09",
    "invoice_number": "88214",
    "net": 1000,
    "vat": 250,
    "gross": 1250,
    "currency": "NOK",
    "paid": true,
    "balance": 0,
    "document_attached": true
  },
  "isError": false
}
```

Previous: [Upload receipt](https://cotlet.dev/docs/mcp/fiken/upload_receipt.md)

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