List all clients in the organization. Returns clients with their associated projects. Supports pagination.

Get detailed information about a specific client by ID.

Create a new client in the organization.

Update an existing client's details.

Delete a client by ID. This cannot be undone.

List all contacts in the organization.

Get detailed information about a specific contact.

Create a new contact.

Update an existing contact's details.

Delete a contact. This cannot be undone.

List all projects in the organization. Returns projects grouped by area with status and member info.

Get detailed information about a specific project.

Create a new project.

Get the full kanban board for a project — all columns with their tasks, assignees, tags, subtask counts, and time tracked.

Update an existing project's details.

Delete a project. This cannot be undone.

List all members of a project.

Add a member to a project.

Remove a member from a project.

Get time tracking statistics for a specific project.

Get Gantt chart data for a project (tasks with dates and dependencies).

Create a new column in a project's kanban board.

Get detailed information about a task including description, assignees, subtasks, tags, time tracked, and child tasks.

Create a new task in a project column.

Update an existing task's properties.

Move a task to a different column (changes its status on the kanban board).

Add an assignee to a task.

List all comments on a task.

Delete a task. This cannot be undone.

Create a subtask (checklist item) on a task.

Toggle a task's completion status.

Remove an assignee from a task.

Add a tag to a task.

Remove a tag from a task.

Archive a task.

Restore an archived task.

Move a task to a different project.

Add a comment to a task.

List time entries. Filter by date range, project, or user.

Log a completed time entry with start and end time.

Start a running timer for time tracking.

Stop a currently running timer.

Get the currently running timer, if any.

Get time tracking statistics (total hours, billable hours, etc.).

Update an existing time entry.

Delete a time entry. This cannot be undone.

List calendar events within a date range.

Get detailed information about a calendar event.

Create a new calendar event.

Update an existing calendar event.

Delete a calendar event.

List invoices. Filter by status, client, or type (invoice, credit_note, cancellation).

Get detailed information about an invoice including line items, payments, and totals.

Create a new draft invoice for a client.

Update the status of an invoice (e.g. mark as sent, paid, cancelled).

Send an invoice to the client via email.

Create a new invoice from tracked time entries for a project.

Update an existing invoice (only drafts can be edited).

Delete a draft invoice. This cannot be undone.

Add a line item to an invoice.

Update a line item on an invoice.

Delete a line item from an invoice.

Record a payment on an invoice.

Create a credit note (Gutschrift) for an invoice.

Create a cancellation invoice (Stornorechnung) for an invoice.

List quotes/proposals. Filter by status or client.

Get detailed information about a quote including line items and totals.

Create a new draft quote/proposal for a client.

Convert an accepted quote into a draft invoice.

Update an existing quote.

Delete a quote. This cannot be undone.

Update the status of a quote.

Send a quote to the client via email.

Duplicate an existing quote.

Add a line item to a quote.

Update a line item on a quote.

Delete a line item from a quote.

Get the financial overview — monthly revenue vs expenses breakdown for a given year.

Get the VAT pre-return (USt-Voranmeldung) summary with Kennzahlen 81, 86, 66, 83.

List received invoices (Eingangsrechnungen) from suppliers.

List all suppliers (Lieferanten).

Get detailed information about a supplier.

Create a new supplier.

Update an existing supplier.

Delete a supplier.

Get details of a received invoice (Eingangsrechnung).

Approve a received invoice.

Preview or download DATEV export data for tax advisor.

List team absences (vacation, sick leave, home office, etc.).

Create a new absence entry (vacation, sick leave, etc.).

Get vacation quota and usage statistics for the team.

Update an existing absence entry.

Delete an absence entry.

List all pages (Notion-like documents).

Get a page with its full content.

Create a new page.

Update a page's content (Tiptap JSON format).

Get the full page tree hierarchy.

Update a page's metadata (title, icon, parent).

Delete a page and all its children. This cannot be undone.