Lexware Office

Service ID: lexware-office

German SMB cloud accounting and invoicing platform by Haufe Group, formerly known as lexoffice.

Beta — this connector is in beta. Functionality and resource coverage may change.

At a Glance

Difficulty
MODERATEAPI key authentication — consumers create credentials manually
Authentication
API KeyAPI key — a static bearer token the consumer generates in Lexware Office. Not OAuth.
Webhooks
Native — invoice, credit-note and contact (customer/supplier) change events; no bill events.
Partnership Required
No(An optional Technology Partnership adds co-marketing and a directory listing.)
Apideck Credentials
Not available(Not available — an API-key connector has no shared Apideck application to provide.)
Costs
€32.90/month XL plan, or €16.45/month introductory. No additional API fee.
Sandbox Availability
Not available(No dedicated sandbox. Build against a free Lexware Office test account: all XL features for 30 days, unlimited accounts, no certification review.)
Account Type Required
Lexware Office XL plan — the tier that includes Public API access.
Consumer Access Level
Administrator — only an admin can create the Public API key.
Rate Limits
2 requests/second, shared across all endpoints.

Responsibility matrix

TaskYou (Customer)Your ConsumerApideck
Lexware Office XL subscription
Generate the Public API key✓ (admin rights required)Docs provided
Add the API key to the connection✓ (if collected on the consumer's behalf)
Renew the API key before it expires
Webhook subscriptions✓ Registered and maintained automatically
Build via the Unified APIMaintains connector
Monitor connections✓ Via Dashboard✓ Can revoke the key anytimeLogs & alerts

Environments

Single environment
Lexware Office runs one environment (api.lexware.io). Testing and production use the same kind of credential — there are no separate development credentials to swap in later.
Testing
Every call hits a live account and creates real business documents, so keep development on an account of its own rather than on a consumer's production data.

🚨Important to Know About Lexware Office

  • Invoices and credit notes cannot be edited or deleted once created — the API has no update endpoint for either, at any status — so a document's status has to be right at creation. The connector attributes the invoice-deletion block to German GoBD record-keeping rules.
  • A Public API key is valid for at most 24 months, then deactivates and is deleted. The consumer has to extend it or mint a replacement before that date, or the connection stops working.
  • Payments has no equivalent resource on this connector — Lexware Office exposes only a voucher's payment-status summary, not a discrete payment record with a transaction date, amount or account reference.
  • Ledger accounts are read-only and list-only — there is no way to fetch, create, or modify an individual ledger account.
⚠️

7 gotchas across 6 resources

Connector-specific behaviors and limitations to be aware of

📦

6 supported resources

View field mappings, supported operations, and schema details