Lexoffice for AI agents

Lexoffice is German cloud accounting software freelancers and small businesses use for invoicing, quotes, and expense tracking synced with their bank accounts. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect Lexoffice See the 44 actions ↓

Finance and accountingAPI keyMCP + RESTlexoffice.de

AUDIT LOG · LEXOFFICEPOLICY: acme-support

09:41:07 · claude · u_8f2read

lexoffice.list_articles

List Articles✓ allowed · 212ms

09:41:08 · claude · u_8f2read

lexoffice.get_article

Get Article✓ allowed · 164ms

09:41:09 · claude · u_8f2write

lexoffice.create_article

Create Article✓ approved · approved by user

09:41:12 · claude · u_8f2destructive

lexoffice.delete_article

Delete Article✕ blocked · policy: deny

EVERY LEXOFFICE CALL, ON THE RECORD

01 · USE CASES

What agents do in Lexoffice.

Create a new invoice

Create an invoice for a customer with line items pulled from a completed order.

Look up a contact's details

Pull a customer or vendor contact's details before creating a document for them.

Approve before deleting an article

Require approval before deleting a product article, since it may be referenced on past documents.

02 · ACTIONS

44 Lexoffice actions, graded by risk.

Every Lexoffice action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

Look things up. Allowed by default.

lexoffice.get_article
Get Article
lexoffice.get_contact
Get Contact
lexoffice.get_dunning
Get Dunning
lexoffice.get_invoice
Get Invoice
lexoffice.get_payment
Get Payment Information
lexoffice.get_profile
Get Profile
lexoffice.get_voucher
Get Voucher
lexoffice.get_quotation
Get Quotation
lexoffice.list_articles
List Articles
lexoffice.list_contacts
List Contacts
lexoffice.list_vouchers
List Vouchers
lexoffice.list_countries
List Countries
lexoffice.get_credit_note
Get Credit Note
lexoffice.list_voucherlist
List Voucherlist
lexoffice.get_delivery_note
Get Delivery Note
lexoffice.list_print_layouts
List Print Layouts

+ 13 MORE

write

Create and change things. Allow, or ask the user first.

lexoffice.create_article
Create Article
lexoffice.create_contact
Create contact
lexoffice.create_invoice
Create Invoice
lexoffice.create_voucher
Create Voucher
lexoffice.update_article
Update Article
lexoffice.update_contact
Update lexoffice contact
lexoffice.update_voucher
Update Voucher
lexoffice.create_quotation
Create Quotation
lexoffice.create_credit_note
Create Credit Note
lexoffice.create_delivery_note
Create Delivery Note
lexoffice.create_event_subscription
Create Event Subscription
lexoffice.create_order_confirmation
Create Order Confirmation
lexoffice.upload_voucher_file
Upload Voucher File

destructive

Delete, cancel or archive. Ask first, or deny outright.

lexoffice.delete_article
Delete Article
lexoffice.delete_event_subscription
Delete Event Subscription

03 · HOW IT WORKS

Lexoffice in three steps.

01Your users connect LexofficeThey add their Lexoffice api key on Arc0 Connect, under your brand. It goes straight into the vault.
02You set the rulesReads run, writes like “create Article” can wait for the user, and “delete Article” can be denied outright.
03Any agent can actYour agent calls Lexoffice through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.

POLICY.TS

await arc0.policies.set('lexoffice', {
  read: 'allow',
  write: 'ask',        // create_article
  destructive: 'deny',  // delete_article
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2

04 · AUTH AND DATA

How Lexoffice connects.

Users add their Lexoffice api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Lexoffice connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH: API key
CREDENTIALS: Per-tenant encrypted vault
MODEL SEES: Results only, never credentials
AUDIT LOG: Every call, on every plan

05 · WORKS WITH

Use Lexoffice from any agent.

Claude

ChatGPT

Cursor

Codex

VS Code

OpenAI Agents SDK

Claude Agent SDK

Vercel AI SDK

Mastra

LangGraph

06 · RELATED

More finance and accounting apps.

Stripe433 actions 44API4 actions

Zoho Books265 actions

Maxio177 actions

ALL FINANCE AND ACCOUNTING APPS →

07 · FAQ

Lexoffice and Arc0, answered.

Q01

Can I use Lexoffice with Claude, ChatGPT or Cursor?

Yes. Connect Lexoffice to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Lexoffice actions you allow.

Q02

How do users connect Lexoffice?

Users add their Lexoffice api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Lexoffice actions can my agent take?

44 in total: 29 read, 13 write and 2 destructive, such as “create Article”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Lexoffice?

Yes. Actions like “delete Article” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Lexoffice too?

Yes. The same Lexoffice connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Lexoffice into your agent.

Your users connect Lexoffice once, under your brand. Your agent gets 44 actions behind your policies, with every call on the record.

Connect Lexoffice Browse all apps →

Free to build · MCP + REST · Audit log on every plan