Connectors · Accounting & finance

Lexware Office MCP server for AI agents.

actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to Lexware Office and the rest of your systems. It gives your agent 49 Lexware Office actions (30 reads, 17 writes and 2 that wait for a confirmation) and holds the Lexware Office credential itself, so the agent never does. It paces Lexware Office's limits and records every call.

Connect Lexware Office free See pricing

100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you.

claude mcp add --transport http actionlake https://connect.actionlake.com/mcp

49actionsin one signed file
30readlook, never change
17writecreate and update
2wait for a yesdestructive, confirmed first

Set up

Connect Lexware Office in three steps.

01
Add actionlake to Claude.
Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us.
https://connect.actionlake.com/mcp
02
Connect Lexware Office.
API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. actionlake stores what you paste write-only, sealed under your tenant's key.
- api_keyLexware API key (Lexware Office > Add-ons > Public API, https://app.lexware.de/addons/public-api)
```
account { op: "connections.requirements", service: "lexware_office" }
# free: exactly what to paste, and what is found for you
```

Make the first call. Check before a write.

Ask in plain words; Claude picks the action. Before anything changes, check validates the call and prices it, for free.

do    { action: "lexware_office.articles.list" }# list and filter articles · read · 1 upstream callcheck { action: "lexware_office.invoices.create", input: { … } }# free: inputs, permissions, cost and confirmations, nothing sent

Lexware Office at a glance

Sign-in: API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead.
You provide: api_key
Limits we pace to: 2 calls a second, per connection
API covered: Lexware API v1 (api.lexware.io)api.lexware.io
Built from: Lexware Office's documentation, read 23 October 2026developers.lexware.io
Service file: Version 1.0.0, signed (Ed25519)
Cached reads: 30 of 30 reads, for up to an hour; a write clears what it affects
Shared entities: 3, so ask can line Lexware Office up with your other systems
Data: Processed and stored in Sydney, Australia. No US region yet

Capabilities

What an AI agent can do in Lexware Office.

49 actions in 19 areas. Every one carries its effect, so a key can allow the reads and hold the rest.

30readlook, never change
17writecreate and update
2destructivewait for a confirmation

Articles
5
2 read · 2 write · 1 destructive
List and filter articles · Create an article · Retrieve an article · Update an article
Contacts
4
2 read · 2 write · 0 destructive
List and filter contacts · Create a contact · Retrieve a contact · Update a contact
Credit notes
4
2 read · 2 write · 0 destructive
Create a credit note · Retrieve a credit note · Pursue a sales voucher to a credit note · Render the credit note PDF document
Delivery notes
4
2 read · 2 write · 0 destructive
Create a delivery note · Pursue a sales voucher to a delivery note · Retrieve a delivery note · Render the delivery note PDF document
Event subscriptions
4
2 read · 1 write · 1 destructive
Create an event subscription · List event subscriptions · Retrieve an event subscription · Delete an event subscription
Invoices
4
2 read · 2 write · 0 destructive
Create an invoice · Retrieve an invoice · Pursue a sales voucher to an invoice · Render the invoice PDF document
Order confirmations
4
2 read · 2 write · 0 destructive
Create an order confirmation · Pursue a sales voucher to an order confirmation · Retrieve an order confirmation · Render the order confirmation PDF document
Vouchers
4
2 read · 2 write · 0 destructive
Create a bookkeeping voucher · Find bookkeeping vouchers by voucher number · Retrieve a bookkeeping voucher · Update a bookkeeping voucher

11 more areas · 16 actions

Dunnings 3
Quotations 3
Recurring templates 2
Countries 1
Down payment invoices 1
Payment conditions 1
Payments 1
Posting categories 1
Print layouts 1
Profile 1
Voucherlist 1

Top actions

The Lexware Office API, shaped for agents.

The ids your agent types, what each does, and the one name it shares with other systems. 22 of Lexware Office's 22 action names are shared with at least one other connector, so an agent learns them once.

Action	What it does	Effect	Same name in
`lexware_office.articles.list`List and filter articles	List and filter articles.	read	`commerce.product.list`112 connectors
`lexware_office.invoices.create`Create an invoice	Create an invoice.	write	`finance.invoice.create`74 connectors
`lexware_office.invoices.get`Retrieve an invoice	Retrieve an invoice.	read	`finance.invoice.get`102 connectors
`lexware_office.articles.create`Create an article	Create an article.	write	`commerce.product.create`92 connectors
`lexware_office.contacts.list`List and filter contacts	List and filter contacts.	read	`crm.contact.list`177 connectors
`lexware_office.quotations.create`Create a quotation	Create a quotation.	write	`finance.quote.create`52 connectors
`lexware_office.articles.delete`Delete an article	Delete an article.	destructive	`commerce.product.delete`80 connectors
`lexware_office.credit_notes.create`Create a credit note	Create a credit note.	write	`finance.credit_note.create`29 connectors
`lexware_office.quotations.get`Retrieve a quotation	Retrieve a quotation.	read	`finance.quote.get`57 connectors
`lexware_office.recurring_templates.list`List recurring templates	List recurring templates.	read	`finance.recurring_invoice.list`14 connectors
`lexware_office.credit_notes.get`Retrieve a credit note	Retrieve a credit note.	read	`finance.credit_note.get`34 connectors
`lexware_office.contacts.create`Create a contact	Create a contact.	write	`crm.contact.create`161 connectors

Try it

Prompts to paste into Claude.

Each one names the Lexware Office actions it will call, so you know what it reads and what it changes before you send it.

Readread
Which Lexware Office invoices are more than 30 days overdue? Group them by customer with the total owed.
callslexware_office.voucherlist.list
Writewrite
Create an invoice in Lexware Office. Show me exactly what you will send before you save it.
callslexware_office.invoices.create
Across systemsread
Which Lexware Office companies have invoices in ConnectWise PSA, and how many each?
callslexware_office.contacts.listconnectwise_manage.invoices.list

Across your systems

Lexware Office, joined to the rest of your business.

One ask fetches from Lexware Office and another system, joins the rows on the same customer on our side, and hands your agent the answer, not every row.

Which Lexware Office companies have invoices in ConnectWise PSA, and how many each?
lexware_office.contacts.list + connectwise_manage.invoices.list, on crm.company · ConnectWise PSA
Which Lexware Office companies have tickets in HubSpot CRM, and how many each?
lexware_office.contacts.list + hubspot_crm.tickets.list, on crm.company · HubSpot CRM

Also mapped by other connectorscrm.company 227commerce.product 109finance.invoice 91

ask

ask {  intent: "which Lexware Office companies have invoices in ConnectWise PSA, and how many each",  steps: [    { action: "lexware_office.contacts.list", as: "co", input: {}, limit: 100, max_pages: 5 },    { action: "connectwise_manage.invoices.list", as: "inv", input: {}, limit: 100, max_pages: 5 },    { join: {        left: "co",        right: "inv",        on: "crm.company",        group_by: "co.name",        select: ["co.name", "count(inv.id) as invoices"]    } }  ]}

Example. Run it through check first: it validates the steps and prices them, and it is free.

Governance for Lexware Office

Destructive actions wait for a yes.

2 Lexware Office actions are destructive. These are all of them:

Delete an articlelexware_office.articles.delete
Delete an event subscriptionlexware_office.event_subscriptions.delete

A destructive action runs only with confirm: true. Under the human policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after.

dolexware_office.articles.deleteconfirm_policy: human

Delete an article?

intent: the user asked me to delete an article

run suspended · waiting for a named person · key lexware-office-agent cannot confirm itself

In the console, or from an emailed signed link.

a key for this connector

account {  op: "keys.create", name: "lexware-office-agent",  allowed_actions: ["lexware_office.*"], cap_calls: 2000,  confirm_policy: "human_for_writes",  approval_rules: [    { match: "lexware_office.articles.delete", approver: "[email protected]" },    { match: "lexware_office.event_subscriptions.delete", approver: "[email protected]" }  ]}

Illustrative. Scoped to Lexware Office only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person.

Cost

What Lexware Office costs on actionlake.

Every Lexware Office action is one upstream call, the only thing actionlake bills. Searching, check, cost, account and any call Lexware Office refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

1upstream call per actionall 49 Lexware Office actions
49actions pageeach page of a long list is one call
30reads can be cacheda cache hit costs nothing
100,000calls a month, freepaid plans from US$49 a month for 250,000

See pricing

Action index

Every Lexware Office action.

49 actions by area: the id your agent calls, what it does, and its effect.

Articles5

lexware_office.articles.createCreate an articlewrite
lexware_office.articles.deleteDelete an articledestructive
lexware_office.articles.getRetrieve an articleread
lexware_office.articles.listList and filter articlesread
lexware_office.articles.updateUpdate an articlewrite

Contacts4

lexware_office.contacts.createCreate a contactwrite
lexware_office.contacts.getRetrieve a contactread
lexware_office.contacts.listList and filter contactsread
lexware_office.contacts.updateUpdate a contactwrite

Credit notes4

lexware_office.credit_notes.createCreate a credit notewrite
lexware_office.credit_notes.documents.renderRender the credit note PDF documentread
lexware_office.credit_notes.getRetrieve a credit noteread
lexware_office.credit_notes.pursuePursue a sales voucher to a credit notewrite

Delivery notes4

lexware_office.delivery_notes.createCreate a delivery notewrite
lexware_office.delivery_notes.documents.renderRender the delivery note PDF documentread
lexware_office.delivery_notes.getRetrieve a delivery noteread
lexware_office.delivery_notes.pursuePursue a sales voucher to a delivery notewrite

Event subscriptions4

lexware_office.event_subscriptions.createCreate an event subscriptionwrite
lexware_office.event_subscriptions.deleteDelete an event subscriptiondestructive
lexware_office.event_subscriptions.getRetrieve an event subscriptionread
lexware_office.event_subscriptions.listList event subscriptionsread

Invoices4

lexware_office.invoices.createCreate an invoicewrite
lexware_office.invoices.documents.renderRender the invoice PDF documentread
lexware_office.invoices.getRetrieve an invoiceread
lexware_office.invoices.pursuePursue a sales voucher to an invoicewrite

Order confirmations4

lexware_office.order_confirmations.createCreate an order confirmationwrite
lexware_office.order_confirmations.documents.renderRender the order confirmation PDF documentread
lexware_office.order_confirmations.getRetrieve an order confirmationread
lexware_office.order_confirmations.pursuePursue a sales voucher to an order confirmationwrite

Vouchers4

lexware_office.vouchers.createCreate a bookkeeping voucherwrite
lexware_office.vouchers.getRetrieve a bookkeeping voucherread
lexware_office.vouchers.listFind bookkeeping vouchers by voucher numberread
lexware_office.vouchers.updateUpdate a bookkeeping voucherwrite

Dunnings3

lexware_office.dunnings.documents.renderRender the dunning PDF documentread
lexware_office.dunnings.getRetrieve a dunningread
lexware_office.dunnings.pursueCreate a dunning for an invoicewrite

Quotations3

lexware_office.quotations.createCreate a quotationwrite
lexware_office.quotations.documents.renderRender the quotation PDF documentread
lexware_office.quotations.getRetrieve a quotationread

Recurring templates2

lexware_office.recurring_templates.getRetrieve a recurring templateread
lexware_office.recurring_templates.listList recurring templatesread

Countries1

lexware_office.countries.listList countriesread

Down payment invoices1

lexware_office.down_payment_invoices.getRetrieve a down payment invoiceread

Payment conditions1

lexware_office.payment_conditions.listList payment conditionsread

Payments1

lexware_office.payments.getRetrieve payment information for a voucherread

Posting categories1

lexware_office.posting_categories.listList posting categoriesread

Print layouts1

lexware_office.print_layouts.listList print layoutsread

Profile1

lexware_office.profile.getRetrieve the organization profileread

Voucherlist1

lexware_office.voucherlist.listList and filter the voucher listread

Questions

The Lexware Office MCP server, answered.

Is there a Lexware Office MCP server for Claude?

Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 49 Lexware Office actions across articles, contacts, credit notes and delivery notes, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by Lexware Office.

What do I need to connect Lexware Office?

Lexware API key (Lexware Office > Add-ons > Public API, https://app.lexware.de/addons/public-api). The free call account { op: "connections.requirements", service: "lexware_office" } lists exactly what to paste.

Can an AI agent delete or change things in Lexware Office?

Only if its key allows it, and only with an explicit confirmation. 2 Lexware Office actions are destructive, including delete an article and delete an event subscription. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it.

Will an AI agent use up my Lexware Office API limit?

actionlake paces every call to the limits in the Lexware Office service file: 2 calls a second per connection. Repeated reads are answered from cache (30 Lexware Office actions can be), which never reaches Lexware Office.

What does a Lexware Office action cost?

One upstream call, the only unit actionlake bills. A list that pages bills one call per page (49 Lexware Office actions page). Cache hits, searches, dry runs and calls Lexware Office refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

Which Lexware Office API does it cover?

The Lexware API v1 (api.lexware.io) at api.lexware.io. It is built from Lexware Office's documentation as read on 23 October 2026. 49 actions in 19 areas, each one in the signed service file (version 1.0.0).

Can I combine Lexware Office with my other systems?

Yes. ask joins Lexware Office to ConnectWise PSA or HubSpot CRM on the same customer and returns the answer rather than every row. Lexware Office maps crm.company, which 227 other connectors also map.

Does actionlake keep my Lexware Office data, and where?

actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to an hour, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your Lexware Office credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models.

Which AI clients can use it?

Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names.

Give your agent Lexware Office today.

Connect Lexware Office free See pricing

Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free.

Lexware Office MCP server for AI agents.

Connect Lexware Office in three steps.

Add actionlake to Claude.

Connect Lexware Office.

Make the first call. Check before a write.

What an AI agent can do in Lexware Office.

Articles

Contacts

Credit notes

Delivery notes

Event subscriptions

Invoices

Order confirmations

Vouchers