eBilanz Fabrik in your AI assistant

Updated: October 2026 · ~4 min read · eBilanz Fabrik (a tool, not tax advice)

In short: with this MCP server your AI assistant runs the technical checks on your balance sheet against the same engine our funnel uses and prepares the submission — only you pay and release; nothing is transmitted until you release it. You run the server yourself.

What you need

• Claude Desktop (or any MCP-capable client).
• Python 3 — preinstalled on macOS and Linux; on Windows from the Microsoft Store or python.org.
• Nothing else: the server has no dependencies, no pip, no sign-up.

In three steps

1. Download the file

One file of readable Python — put it anywhere you will find it again:

⤓ Download ebf-mcp-server.py

2. Add it to your config

Open Claude Desktop's config file and add the server. Replace /PFAD/ZU/ with wherever you saved the file.

{
  "mcpServers": {
    "ebilanz-fabrik": {
      "command": "python3",
      "args": [
        "/PFAD/ZU/ebf-mcp-server.py"
      ]
    }
  }
}

Where that file lives: macOS ~/Library/Application Support/Claude/claude_desktop_config.json · Windows %APPDATA%\Claude\claude_desktop_config.json

3. Restart Claude Desktop

ebilanz-fabrik then appears in the tool list. Try: “Is a micro GmbH, fiscal year 2025, balance sheet date 2025-12-31, a fit for eBilanz Fabrik?” or “Here is my balance sheet with total assets, total liabilities and the equity positions — check it and tell me what does not add up.”

No download: add it as a connector by URL

In Claude you can connect eBilanz Fabrik without a file: under “Customize → Connectors”, choose “Add custom connector” and enter the URL https://app.ebilanzfabrik.de/mcp. The Free plan allows one custom connector; in Team and Enterprise accounts an Owner adds it for the organisation. Through the URL, three tools are available: the products on offer, the current prices, and a lookup whether we can serve your company by legal form, size class and financial year; the size class is the one you state yourself. Through the URL, eBilanz Fabrik accepts no figures; checking figures and building the pre-filled link stay with the local file (where your figures go then is set out under “Where your figures stay”). What reaches us is described in the privacy policy under “AI-assistant interface (MCP)”.

Examples: “Which products does eBilanz Fabrik offer right now?” · “What does the e-Bilanz cost for a micro GmbH?” · “My UG is a micro company (Kleinstkapitalgesellschaft), financial year 2025, balance-sheet date 31.12.2025 — can I transmit its e-Bilanz with eBilanz Fabrik?”

What your assistant can do with it

• ebf_get_products — Which eBilanz Fabrik products can be bought right now, as the server itself reports.
• ebf_get_pricing — Current net prices per submission, read from the site's published Offer metadata. German VAT of 19 % is added at checkout.
• ebf_check_eligibility — Ask whether a given company can be served — legal form, size class, fiscal year — answered by the production engine, with the reasons if not.
• ebf_validate_figures — Check a balance sheet and P&L against the same rules the funnel applies — balance, P&L tie-out, eligibility — BEFORE the person starts. Catches what people otherwise discover at the payment step.
• ebf_build_filing_link — Build a link that opens the funnel with every field already filled in, to hand to the person. The figures ride in the URL fragment and never reach a server log. This does NOT file anything: the person reviews, pays, and releases the transmission with their own ELSTER certificate.

What it deliberately cannot do

• It cannot transmit. No certificate, no PIN, nothing sent to the tax office. Deciding which position goes where is, when done as a business for someone else, reserved to the tax-advising professions (§§ 2–5 StBerG) — eBilanz Fabrik does not make that decision case by case: for some positions we ask you; totals we do not ask about are filed under a standard position by one fixed rule that is the same for everyone.
• It cannot pay. The purchase happens with you, not with the assistant.
• It cannot send anything quietly. What you get is a link with everything already filled in. You see every figure before anything happens.

Where your figures stay

Your AI assistant reads your figures, so they reach its provider. The link your assistant hands you carries the values in the URL fragment (after the #). Browsers never transmit a fragment to a server, so your figures appear in no access log until you open the page yourself. The check itself runs through our public validation endpoint, which discards the amounts once it has answered and stores only an anonymous check pattern without amounts.

Frequently asked

Provided without warranty; the statutory rules govern (including § 5b EStG and §§ 2–5 StBerG). eBilanz Fabrik does not provide tax advice.