Can I create a new customer record through my agent?

Yes. Use the `create_contact` tool by providing the company name, contact person, and email. Your agent will format the data according to Lexware Office standards and assign the correct role ('customer' or 'vendor') instantly.

How do I check the payment status of an invoice?

The `get_invoice` tool retrieves the complete document structure, including the current status (e.g., 'paid', 'open', or 'overdue'). Your agent can summarize these details for you directly in the conversation.

Can my agent list all accounting categories available in my account?

Absolutely. Use the `list_posting_categories` tool to retrieve the defined chart of accounts. This is essential for understanding how revenues and expenses are mapped to your financial reports and DATEV exports.

Lexware Office (Accounting & Invoicing) MCP Server for Pydantic AI 14 tools — connect in under 2 minutes

Name: Lexware Office (Accounting & Invoicing)
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 14 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Lexware Office (Accounting & Invoicing) through the Vinkius and every tool is automatically validated against Pydantic schemas — catch errors at build time, not in production.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerHTTP

async def main():
    # Your Vinkius token — get it at cloud.vinkius.com
    server = MCPServerHTTP(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")

    agent = Agent(
        model="openai:gpt-4o",
        mcp_servers=[server],
        system_prompt=(
            "You are an assistant with access to Lexware Office (Accounting & Invoicing) "
            "(14 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in Lexware Office (Accounting & Invoicing)?"
    )
    print(result.data)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Lexware Office (Accounting & Invoicing) MCP Server

Connect your Lexware Office (lexoffice) account to any AI agent and take full control of your cloud-based accounting and invoicing through natural conversation.

Pydantic AI validates every Lexware Office (Accounting & Invoicing) tool response against typed schemas, catching data inconsistencies at build time. Connect 14 tools through the Vinkius and switch between OpenAI, Anthropic, or Gemini without changing your integration code — full type safety, structured output guarantees, and dependency injection for testable agents.

What you can do

Contact Management — List and structure all business contacts (customers, vendors) and create new records with precise role assignments directly from your agent
Invoice Lifecycle — Browse chronologically sorted invoices and retrieve detailed line items, VAT breakdowns, and payment statuses securely
Accounting Vouchers — Access a unified stream of all recorded vouchers, including expenses, revenue, and credit notes for easy bookkeeping audits
Sales Pipeline — List and inspect quotations, order confirmations, and delivery notes to monitor your sales and logistics workflow
Financial Configuration — Query global payment conditions and posting categories to ensure accurate account mapping and tax compliance
Credit Notes Audit — Retrieve exact amount details and positions for credit notes to manage cancellations and financial corrections efficiently

The Lexware Office (Accounting & Invoicing) MCP Server exposes 14 tools through the Vinkius. Connect it to Pydantic AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Lexware Office (Accounting & Invoicing) to Pydantic AI via MCP

Follow these steps to integrate the Lexware Office (Accounting & Invoicing) MCP Server with Pydantic AI.

Install Pydantic AI

Run pip install pydantic-ai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save to agent.py and run: python agent.py

Explore tools

The agent discovers 14 tools from Lexware Office (Accounting & Invoicing) with type-safe schemas

Why Use Pydantic AI with the Lexware Office (Accounting & Invoicing) MCP Server

Pydantic AI provides unique advantages when paired with Lexware Office (Accounting & Invoicing) through the Model Context Protocol.

Full type safety: every MCP tool response is validated against Pydantic models, catching data inconsistencies before they reach your application

Model-agnostic architecture — switch between OpenAI, Anthropic, or Gemini without changing your Lexware Office (Accounting & Invoicing) integration code

Structured output guarantee: Pydantic AI ensures tool results conform to defined schemas, eliminating runtime type errors

Dependency injection system cleanly separates your Lexware Office (Accounting & Invoicing) connection logic from agent behavior for testable, maintainable code

Lexware Office (Accounting & Invoicing) + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the Lexware Office (Accounting & Invoicing) MCP Server delivers measurable value.

Type-safe data pipelines: query Lexware Office (Accounting & Invoicing) with guaranteed response schemas, feeding validated data into downstream processing

API orchestration: chain multiple Lexware Office (Accounting & Invoicing) tool calls with Pydantic validation at each step to ensure data integrity end-to-end

Production monitoring: build validated alert agents that query Lexware Office (Accounting & Invoicing) and output structured, schema-compliant notifications

Testing and QA: use Pydantic AI's dependency injection to mock Lexware Office (Accounting & Invoicing) responses and write comprehensive agent tests

Lexware Office (Accounting & Invoicing) MCP Tools for Pydantic AI (14)

These 14 tools become available when you connect Lexware Office (Accounting & Invoicing) to Pydantic AI via MCP:

create_contact

Berücksichtigt hierbei standardisierte Formatierung für Kontaktpersonen (Vorname Nachname) und Rollenzuweisungen. Neuen Geschäftsdatensatz (Kunde oder Lieferant) in Lexoffice anlegen

get_contact

Detaillierte Kontaktinformationen eines Kunden oder Lieferanten abrufen

get_credit_note

Exakte Betragsdetails und Positionen einer spezifischen Gutschrift abfragen

get_invoice

-Beträge (Steuer), Netto-/Bruttosummen sowie Statusverknüpfungen (bezahlt, offen, mahnend). Detaillierte Informationen sowie Positionen einer bestimmten Rechnung abrufen

get_quotation

Umfangreiche Einzelheiten (Beträge, Positionen) eines bestimmten Angebots betrachten

list_contacts

Nützlich zur Verwaltung der Stammdaten. Alle Kontakte (Kunden, Lieferanten) in Lexoffice strukturieren und auflisten

list_credit_notes

Gutschriftsbelegen zur buchhalterischen Prüfung nach Datum absteigend strukturiert. Historie aller in Lexoffice verzeichneten Gutschriften anzeigen

list_delivery_notes

Sammlung ausgestellter Lieferscheine (Versanddokumente) abrufen

list_invoices

Verwendet standardmäßig die paginierte Ansicht. Alle abgerechneten Rechnungen auflisten, chronologisch sortiert

list_order_confirmations

Strukturiertes Register aller bisherigen Auftragsbestätigungen aufrufen

list_payment_conditions

Stammdaten zu global hinterlegten Zahlungsbedingungen (Zahlungsziele, Skonto) abfragen

list_posting_categories

Dies regelt in der Zuordnung, auf welches DATEV- oder Interne-Konto ein Vorfall verbucht wird. Definierte Buchungskategorien / Kontorahmen für Einnahmen und Ausgaben anzeigen

list_quotations

Zusammenstellung offener und abgeschlossener Angebote auflisten

list_vouchers

Deckt Rechnungen, Gutschriften und Ausgaben in einem gebündelten Datenstrom ab. Gesamtübersicht aller Arten verbuchter Belege (Ausgaben, Einnahmen) betrachten

Example Prompts for Lexware Office (Accounting & Invoicing) in Pydantic AI

Ready-to-use prompts you can give your Pydantic AI agent to start working with Lexware Office (Accounting & Invoicing) immediately.

"List the last 5 invoices from Lexware Office"

"Show me the details for contact 'TechGmbH' (ID: cont-123)"

"What are my current payment conditions?"

Troubleshooting Lexware Office (Accounting & Invoicing) MCP Server with Pydantic AI

Common issues when connecting Lexware Office (Accounting & Invoicing) to Pydantic AI through the Vinkius, and how to resolve them.

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Lexware Office (Accounting & Invoicing) + Pydantic AI FAQ

Common questions about integrating Lexware Office (Accounting & Invoicing) MCP Server with Pydantic AI.

How does Pydantic AI discover MCP tools?

Create an MCPServerHTTP instance with the server URL. Pydantic AI connects, discovers all tools, and generates typed Python interfaces automatically.

Does Pydantic AI validate MCP tool responses?

Yes. When you define result types as Pydantic models, every tool response is validated against the schema. Invalid data raises a clear error instead of silently corrupting your pipeline.

Can I switch LLM providers without changing MCP code?

Absolutely. Pydantic AI abstracts the model layer — your Lexware Office (Accounting & Invoicing) MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.