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# Lexware Office (lexoffice) API

> Every Lexware Office (lexoffice) endpoint on Cotlet: inputs, JSON Schema, cURL, Python and Node.js examples and an example response for each call.

Source: https://cotlet.dev/docs/api/lexware-office

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)

14 endpoints for Lexware Office (lexoffice), each at its own method and path, called with your API key. Open an endpoint for its inputs, examples and response.

- Base URL: `https://cotlet.dev/api/v1/lexware-office`
- Connects with: Your own Lexware Office user. Invoices, quotes and reminders need version M or higher, receipts version S or higher. The restricted role "Belege, Kontakte & Produkte" cannot cancel paid invoices or delete payments.
- Integration page: https://cotlet.dev/integrations/lexware-office-api-mcp-server

## Read

Return data and change nothing in the account.

| Endpoint | Description |
|---|---|
| [`GET /documents`](https://cotlet.dev/docs/api/lexware-office/list_documents.md) | Invoices, quotes, order confirmations and delivery notes, filtered by type and status. |
| [`GET /documents/{document_id}`](https://cotlet.dev/docs/api/lexware-office/get_document.md) | One document with its lines, totals, status and reminders already sent. |
| [`GET /contacts`](https://cotlet.dev/docs/api/lexware-office/list_contacts.md) | Customers and suppliers saved in Lexware Office, searchable by name or email. |
| [`GET /receipts`](https://cotlet.dev/docs/api/lexware-office/list_receipts.md) | Receipts in Lexware Office with the fields the automatic recognition filled in. |
| [`GET /documents/{document_id}/pdf/download`](https://cotlet.dev/docs/api/lexware-office/download_document_pdf.md) | The PDF of a finalised invoice or quote. |

## Write

Change the account. Calls marked Confirm wait for the user to approve them.

| Endpoint | Description |
|---|---|
| [`POST /contacts`](https://cotlet.dev/docs/api/lexware-office/create_contact.md) | Save a new customer or supplier in Lexware Office. |
| [`POST /contacts/{contact_id}/invoices`](https://cotlet.dev/docs/api/lexware-office/create_invoice.md) | Save a draft invoice for a contact. Nothing is sent and no number is assigned yet. |
| [`POST /contacts/{contact_id}/quotations`](https://cotlet.dev/docs/api/lexware-office/create_quotation.md) | Save a draft quote for a contact. Nothing is sent. |
| [`POST /documents/{document_id}/finalize`](https://cotlet.dev/docs/api/lexware-office/finalize_document.md) (Confirm) | Finalise a draft invoice or quote: it gets its number and can no longer be edited. |
| [`POST /documents/{document_id}`](https://cotlet.dev/docs/api/lexware-office/send_document.md) (Confirm) | Email a finalised invoice or quote to the customer with its PDF attached. |
| [`POST /documents/{document_id}/payments`](https://cotlet.dev/docs/api/lexware-office/record_payment.md) (Confirm) | Record a customer payment on an open invoice. |
| [`POST /documents/{document_id}/payment-reminders`](https://cotlet.dev/docs/api/lexware-office/send_payment_reminder.md) (Confirm) | Send a Mahnung or Zahlungserinnerung for an overdue invoice, with an optional fee. |
| [`POST /documents/{document_id}/invoice/cancel`](https://cotlet.dev/docs/api/lexware-office/cancel_invoice.md) (Confirm) | Cancel (stornieren) a finalised invoice. The number stays blocked. |
| [`POST /receipts`](https://cotlet.dev/docs/api/lexware-office/upload_receipt.md) | Upload a supplier invoice or receipt file for bookkeeping. It lands in "Zu prüfen". |

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3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

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