lexoffice
lexoffice (rebranded to "lexware Office" in 2025) is a German cloud accounting, invoicing, and bookkeeping SaaS from Lexware (Haufe Group). Its public REST API lets developers push and pull business data - contacts, invoices, quotations, order confirmations, delivery notes, credit notes, dunnings, bookkeeping vouchers, files, payments, and profile metadata - and subscribe to webhooks via event subscriptions. Authentication is a self-serve Bearer API key. The API gateway moved from api.lexoffice.io to api.lexware.io on 26 May 2025 as part of the rebrand; the legacy host remained available through December 2025.
lexoffice publishes 14 APIs on the APIs.io network, including Contacts API, Credit Notes API, Delivery Notes API, and 11 more. Tagged areas include Accounting, Invoicing, Bookkeeping, Finance, and Germany.
lexoffice’s developer surface includes authentication, documentation, and 7 more developer resources.
Kin Score
APIs 14
Individual APIs this provider publishes, each with its own machine-readable definition.
lexoffice Contacts API
Customers and vendors.
lexoffice Credit Notes API
Credit note documents.
lexoffice Delivery Notes API
Delivery note documents.
lexoffice Down Payment Invoices API
Down payment invoice documents.
lexoffice Dunnings API
Payment reminder documents.
lexoffice Event Subscriptions API
Webhook subscriptions for change events.
lexoffice Files API
File upload and download for voucher receipts.
lexoffice Invoices API
Outgoing invoices.
lexoffice Order Confirmations API
Order confirmation documents.
lexoffice Payments API
Payment status for a voucher and payment conditions.
lexoffice Profile API
Account profile and reference metadata.
lexoffice Quotations API
Sales quotations / offers.
lexoffice Recurring Templates API
Templates that generate recurring invoices.
lexoffice Vouchers API
Bookkeeping vouchers and the voucherlist search.
Scroll for all 14
Open Collections 1
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
lexoffice (lexware Office) Public API
OPEN COLLECTIONPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Lexoffice Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Lexoffice Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API