Integration
Connect Intervals and Lexware Office
When New client fires in Intervals, your agent runs Create a contact in Lexware Office, or Contact updated (instant) in Lexware Office to Add invoice in Intervals. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Intervals and Lexware Office to do together?
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https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What Intervals and Lexware Office can do together
From Intervals to Lexware Office
When New client in Intervals
then Create a contact in Lexware Office
When New invoice in Intervals
then Create an invoice in Lexware Office
From Lexware Office to Intervals
When Contact updated (instant) in Lexware Office
then Add invoice in Intervals
When Invoice status changed (instant) in Lexware Office
then Add task in Intervals
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Intervals and Lexware Office
Triggers and actions 16 triggers · 78 actions
Trigger
New clientPolling trigger: fires when a new client is created in Intervals.
Trigger
New invoicePolling trigger: fires when a new invoice is created in Intervals.
Trigger
New milestonePolling trigger: fires when a new milestone is created in Intervals.
Trigger
New personPolling trigger: fires when a new person is added in Intervals.
Trigger
New projectPolling trigger: fires when a new project is created in Intervals.
Trigger
New taskPolling trigger: fires when a new task is created in Intervals.
Action
Add clientCreate a new client.
Action
Add expenseCreate a new expense.
Action
Add invoiceCreate a new invoice.
Action
Add milestoneCreate a new milestone.
Action
Add personCreate a new person (team member).
Action
Add projectCreate a new project.
Action
Add taskCreate a new task.
Action
Add time entryLog a new time entry against a task.
Action
Add timerStart a new timer for a task.
Action
Delete clientDelete a client.
Action
Delete expenseDelete an expense.
Action
Delete invoiceDelete an invoice.
Action
Delete milestoneDelete a milestone.
Action
Delete personDelete a person.
Action
Delete projectDelete a project.
Action
Delete taskDelete a task.
Action
Delete time entryDelete a logged time entry.
Action
Delete timerDelete a timer.
Action
Get clientRetrieve a single client by id.
Action
Get expenseRetrieve a single expense by id.
Action
Get invoiceRetrieve a single invoice by id.
Action
Get milestoneRetrieve a single milestone by id.
Action
Get personRetrieve a single person by id.
Action
Get projectRetrieve a single project by id.
Action
Get taskRetrieve a single task by id.
Action
Get time entryRetrieve a single logged time entry by id.
Action
Get timerRetrieve a single timer by id.
Action
List milestonesRetrieve all milestones in the Intervals account.
Action
List tasksRetrieve all tasks in the Intervals account.
Action
Update clientUpdate an existing client's details.
Action
Update expenseUpdate an existing expense.
Action
Update invoiceUpdate an existing invoice.
Action
Update milestoneUpdate an existing milestone.
Action
Update personUpdate an existing person's details.
Action
Update projectUpdate an existing project's details.
Action
Update taskUpdate an existing task's details.
Action
Update time entryUpdate an existing logged time entry.
Action
Update timerUpdate a timer (e.g. stop or adjust it).
Trigger
Contact updated (instant)Fires when a contact changes in Lexware Office. Event type: contact.changed.
Trigger
Invoice status changed (instant)Fires when an invoice's status changes in Lexware Office. Event type: invoice.status.changed.
Trigger
New article (instant)Fires when a new article is created in Lexware Office. Event type: article.created.
Trigger
New contact (instant)Fires when a new contact is created in Lexware Office. Event type: contact.created.
Trigger
New credit note (instant)Fires when a new credit note is created in Lexware Office. Event type: credit-note.created.
Trigger
New invoice (instant)Fires when a new invoice is created in Lexware Office. Event type: invoice.created.
Trigger
New order confirmation (instant)Fires when a new order confirmation is created in Lexware Office. Event type: order-confirmation.created.
Trigger
New quotation (instant)Fires when a new quotation is created in Lexware Office. Event type: quotation.created.
Trigger
New voucher (instant)Fires when a new bookkeeping voucher is created in Lexware Office. Event type: voucher.created.
Trigger
Payment changed (instant)Fires when the payment status of a sales voucher changes in Lexware Office. Event type: payment.changed.
Action
Create a contactCreates a contact in Lexware Office as a person or a company, with optional billing address, email, phone and note, and returns the new contact's ID.
Action
Create a credit noteCreates a credit note in Lexware Office for an existing contact or a typed-in address, with your line items. Saves it as a draft unless you choose to finalize it.
Action
Create a delivery noteCreates a delivery note in Lexware Office for an existing contact or a typed-in address, with your delivered line items. Saves it as a draft unless you choose to finalize it.
Action
Create a dunningCreates a dunning (payment reminder) in Lexware Office, normally chasing an unpaid invoice. Saves it as a draft unless you choose to finalize it.
Action
Create an articleCreates a product or service article in Lexware Office with its unit, price and tax rate, and returns the new article's ID.
Action
Create an invoiceCreates an invoice in Lexware Office for an existing contact or a typed-in address, with your line items and payment terms. Saves it as a draft unless you choose to finalize it.
Action
Create an order confirmationCreates an order confirmation in Lexware Office for an existing contact or a typed-in address, with your confirmed line items. Saves it as a draft unless you choose to finalize it.
Action
Create a quotationCreates a quotation in Lexware Office for an existing contact or a typed-in address, with your quoted line items and an expiry date. Saves it as a draft unless you choose to finalize it.
Action
Create a voucherBooks a voucher (an incoming or outgoing document) into Lexware Office with its booking lines, and returns the new voucher's ID.
Action
Delete an articleDeletes an article from Lexware Office by its ID.
Action
Download a credit note fileReturns the PDF file ID and download URL for a finalized credit note in Lexware Office.
Action
Download a delivery note fileReturns the PDF file ID and download URL for a finalized delivery note in Lexware Office.
Action
Download a dunning fileReturns the PDF file ID and download URL for a finalized dunning in Lexware Office.
Action
Download a fileDownloads the actual bytes of a file stored in Lexware Office by its file ID — for example the PDF that "Download an invoice file" reports. Returns the file so a later step can email, upload or attach it.
Action
Download an invoice fileReturns the PDF file ID and download URL for a finalized invoice in Lexware Office.
Action
Download an order confirmation fileReturns the PDF file ID and download URL for a finalized order confirmation in Lexware Office.
Action
Download a quotation fileReturns the PDF file ID and download URL for a finalized quotation in Lexware Office.
Action
Find articlesSearches the Lexware Office article list by article number, barcode or type, and returns the matching articles a page at a time.
Action
Find contactsSearches Lexware Office contacts by email, name, number or role, and returns the matching contacts a page at a time.
Action
Find voucher listLists Lexware Office documents (invoices, credit notes, quotations and the rest) filtered by type, status, contact and date, a page at a time.
Action
Find vouchersFinds booked vouchers in Lexware Office by their document number and returns the full voucher records.
Action
Get a contactReturns one Lexware Office contact by its ID, with its roles, person or company details, addresses, emails and phone numbers.
Action
Get a credit noteReturns one Lexware Office credit note by its ID, with its recipient, line items, totals and status.
Action
Get a delivery noteReturns one Lexware Office delivery note by its ID, with its recipient, delivered lines and delivery date.
Action
Get a dunningReturns a single dunning (payment reminder) by its ID, including its addressee, line items, totals and PDF file reference.
Action
Get an articleReturns a single article (product or service) by its ID, including its name, article number, unit and pricing.
Action
Get an invoiceReturns a single invoice by its ID, including its addressee, line items, totals, payment terms and PDF file reference.
Action
Get an order confirmationReturns a single order confirmation by its ID, including its addressee, line items, totals and PDF file reference.
Action
Get a quotationReturns a single quotation by its ID, including its addressee, line items, totals, expiry date and PDF file reference.
Action
Get a voucherReturns a single bookkeeping voucher by its ID, including its type, contact, amounts, line items and attached files.
Action
Get payment informationReturns the payment status of a voucher, such as an invoice: how much is still open, when it was paid, and the individual payments booked against it.
Action
Pursue to a credit noteCreates a credit note that follows on from an existing invoice, linking the two in Lexware Office. Copies the invoice's recipient, lines and tax settings unless you supply your own lines.
Action
Pursue to a delivery noteCreates a delivery note that follows on from an existing order confirmation, linking the two in Lexware Office. Copies the recipient, lines and tax settings unless you supply your own lines.
Action
Pursue to a dunningCreates a dunning (payment reminder) that follows on from an unpaid invoice, linking the two in Lexware Office. Copies the recipient, lines and tax settings unless you supply your own lines.
Action
Pursue to an invoiceCreates an invoice that follows on from an existing order confirmation, linking the two in Lexware Office. Copies the recipient, lines and tax settings unless you supply your own lines.
Action
Pursue to an order confirmationCreates an order confirmation that follows on from an existing quotation, linking the two in Lexware Office. Copies the recipient, lines and tax settings unless you supply your own lines.
Action
Update a contactUpdates an existing contact in Lexware Office. Reads the contact first and changes only the details you fill in, leaving everything else as it was.
Action
Update an articleUpdates an existing article in Lexware Office. Reads the article first and changes only the details you fill in, leaving everything else as it was.
Action
Update a voucherUpdates an existing bookkeeping voucher in Lexware Office. Reads the voucher first and changes only the details you fill in, leaving everything else as it was.
Action
Upload Document for Bookkeeping PurposesUploads a receipt or other document to Lexware Office for bookkeeping and returns its file ID, which you can attach to a voucher.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
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Questions
Intervals and Lexware Office, answered
What can start an automation from Intervals?
Any of Intervals's 6 triggers in the catalog, including New client, New invoice, New milestone and New person. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Lexware Office when something happens in Intervals?
Any of Lexware Office's 40 actions, including Create a contact, Create a credit note, Create a delivery note and Create a dunning. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Lexware Office to Intervals?
Yes. When something happens in Lexware Office, your agent can act in Intervals too. This page covers both directions: Lexware Office's triggers and Intervals's actions are listed here as well.
Do I have to build a connector for Intervals or Lexware Office?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use Intervals and Lexware Office without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.