Klardaten MCP Server

Connect existing AI tools to DATEV

Langdock, ChatGPT, Claude, Copilot Studio, Open WebUI, n8n, Codex, and other MCP-compatible tools can receive secure, controlled access to DATEV data. No custom assistant integration needs to be developed.

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Product demo

See the MCP server in action

Watch an AI assistant retrieve the required DATEV data and turn it into a sourced briefing for a client meeting.

MCP for your existing AI platform

The Klardaten MCP server provides DATEV context to an MCP-compatible assistant or automation platform. The team continues to work in its existing application while Klardaten provides the connection to DATEV.

LangdockChatGPTCopilot CoworkClaudeClaude CodeClaude DesktopCopilot StudioOpen WebUIn8nCodex

Scope

Secure DATEV access through MCP

Detailed MCP scope

See which DATEV data areas can be read through MCP and how the optional accounting-sequence write permission is bounded.

View the complete scope

Access to six DATEV modules

More than 100 data resources from Accounting, DMS, Master Data, Order Management, and Payroll (Lohn und Gehalt and LODAS) are available through one MCP server.

Controlled write permissions

Selected write actions, such as creating accounting sequences (Buchungsstapel), require explicit approval and are recorded in the audit log. Existing user permissions and profiles remain part of the access model.

OAuth authentication

Compatible clients connect through remote MCP and OAuth 2.1. A custom integration for each AI assistant therefore does not need to be developed.

How it works

From DATEV to your assistant in three steps

The MCP extension uses the DATEVconnect Gateway as its connection layer. The tax firm defines who may use the MCP server and which DATEV profile applies.

  1. 1

    Connect the DATEV environment

    The DATEVconnect Gateway is installed in the firm's DATEV environment and the connection is tested before use.

  2. 2

    Authorize users and profiles

    Define who may connect and which DATEV user context or profile should apply to requests.

  3. 3

    Connect the AI tool with OAuth

    Add the Klardaten MCP endpoint in the chosen client, complete the OAuth flow, and select the DATEV tools the user needs.

Maintained solution

Need a finished outcome instead of building it yourself?

Klarvos handles ready-made tax-firm tasks and presents the results for review. Operation, versioning, and maintenance are clearly defined for each solution.

View Klarvos solutions

Existing AI platform

Connect DATEV through MCP

Choose MCP when the team wants to keep working in Langdock, ChatGPT, Claude, Copilot Studio, Open WebUI, n8n, or another compatible client.

The Gateway costs 85 EUR per firm and month with annual billing. The MCP extension costs an additional 10 EUR per user and month with annual billing.

MCP for your existing AI platform

Use DATEV data in Langdock, ChatGPT, Claude, Copilot Studio, or another MCP client.

Order MCP access