# Lexoffice AI integration on Definable

> Lexoffice is a cloud-based accounting software designed for freelancers and small businesses, offering invoicing, expense management, and integration with banks

## What this connects

Lexoffice is a cloud-based accounting software designed for freelancers and small businesses, offering invoicing, expense management, and integration with banks

Vendor: https://office.lexware.de/

## Tools available

**41** tools available. First 12:

- `LEXOFFICE_CREATE_ARTICLE` — Create Article — Tool to create a new article (product or service) in Lexoffice. Use when you need to add items to the product/service catalog for invoicing or quotations. The leadingPrice field must be uppercase (NET or GROSS).
- `LEXOFFICE_CREATE_CONTACT` — Create contact — Tool to create a new contact (customer or vendor) in Lexoffice. Use when you need to add a new business contact. Either company or person details must be provided, and at least one role (customer/vendor) must be assigned.
- `LEXOFFICE_CREATE_CREDIT_NOTE` — Create Credit Note — Tool to create a credit note in Lexoffice. Credit notes are created in draft mode by default; set finalize=true to create with status 'open'. Use when you need to issue a refund or credit for an invoice. Maximum 300 line items per credit note.
- `LEXOFFICE_CREATE_DELIVERY_NOTE` — Create Delivery Note — Create a delivery note in lexoffice. Delivery notes are created in draft mode by default (set finalize=true for open status). Use when shipping goods or providing services and need to document what was delivered without prices/payment terms. Maximum 300 line items allowed per delivery note.
- `LEXOFFICE_CREATE_EVENT_SUBSCRIPTION` — Create Event Subscription — Tool to register a new webhook for Lexoffice events. Use when you need to receive real-time notifications for specific events like invoice creation, contact changes, or payment updates.
- `LEXOFFICE_CREATE_ORDER_CONFIRMATION` — Create Order Confirmation — Tool to create an Order Confirmation in Lexoffice/Lexware. Order confirmations are always created in draft mode and do not need to be finalized. Use when you need to confirm a customer order with line items, pricing, and shipping details.
- `LEXOFFICE_CREATE_QUOTATION` — Create Quotation — Tool to create a quotation in Lexoffice. Quotations are created in draft mode by default. Use the finalize parameter to create a finalized quotation with status 'open'. Requires address with either contactId or name+countryCode, line items, total pricing, and tax conditions.
- `LEXOFFICE_CREATE_VOUCHER` — Create Voucher — Tool to create a bookkeeping voucher in Lexoffice. Use when you need to create expense receipts, sales invoices, purchase invoices, or other accounting vouchers. The voucher requires line items with amounts, tax rates, and posting category IDs.
- `LEXOFFICE_DELETE_ARTICLE` — Delete Article — Tool to permanently delete an article by its ID. Returns success confirmation on 204, or raises error if article not found (404).
- `LEXOFFICE_DELETE_EVENT_SUBSCRIPTION` — Delete Event Subscription — Tool to delete an event subscription by its ID. Use when you need to remove an existing event subscription from Lexoffice.
- `LEXOFFICE_DOWNLOAD_FILE` — Download File — Download a file from lexoffice by its ID. Use this to retrieve PDF documents, images, or XML files associated with invoices, vouchers, or other records. The file format returned depends on the Accept header specified.
- `LEXOFFICE_GET_ARTICLE` — Get Article — Tool to retrieve an article by ID from Lexoffice. Use when you need to fetch details of a specific article including its price, type, and other metadata.

## Auth

Auth schemes: `API_KEY`.

## How agents use Lexoffice

Inside a Definable workflow, Lexoffice is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Lexoffice** — the Researcher (GPT-5.5) pulls context from Lexoffice (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Lexoffice** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Lexoffice (create record, post message, draft email).
- **Designer / Engineer → Distributor → Lexoffice** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Lexoffice (attach file, open PR comment, post status).

The Verifier checks every Lexoffice call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- accounting — https://definable.ai/apps/category/accounting/
- proposal & invoice management — https://definable.ai/apps/category/proposal-&-invoice-management/

## Related

- HTML page: https://definable.ai/apps/lexoffice/
- Same category (accounting): https://definable.ai/apps/category/accounting/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt