syn.tax

de.syn-taxPublished by syn-tax.deOfficial publisherv1.0.0Updated Oct 24, 2026

German tax-firm workflows: clients, deadlines, documents, time tracking and DATEV data via OAuth.

VerifiedStreamable HTTPWeb executableBusiness & Commerce

Overview

AI-generated overview

A remote MCP server for German tax-firm workflows, letting an assistant work with clients, deadlines, documents, time tracking and DATEV data via OAuth.

What you can do
Connect an assistant to a German tax firm's practice data through a hosted endpoint. Work with client records and related firm data. Track deadlines and time entries. Handle documents associated with clients and engagements. Access DATEV-related data. No individual tools are listed, so exact operations are not documented here.
When to use it
Useful for German tax practices already using syn.tax that want an assistant to help with client administration, deadline tracking, document handling and time tracking without leaving the conversation.
Requirements
A remote streamable HTTP endpoint at the provider's host; no local package or runtime is needed. OAuth authentication is required, so an account with the provider and an OAuth sign-in are needed. Network access to the endpoint is required.
Before you install
The server holds tax-firm client data, deadlines and DATEV records, which are sensitive business and personal data. Actions may read or change client and time-tracking records; confirm before letting an assistant write. Access is granted through OAuth, so review which scopes and account you authorize.

Installation

In SourceWeft

  1. Open syn.tax in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/de.syn-tax%2Fsyn-tax/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "syn-tax": {
      "type": "http",
      "url": "https://actions.syn-tax.de/mcp"
    }
  }
}

Tools

0
This server asks you to sign in, so SourceWeft could not read its tools without an account and has not indexed them. What a connected account sees can depend on that account and its permissions.

Version history

1
  1. v1.0.0LatestOct 12, 2026

Score

67% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.