🇩🇪 DE

AI agent for ELSTER

Connect ELSTER to your AI agent through the WorkAist MCP server. DE tax authority filing API (Finanzamt)

In 60 seconds

The WorkAist ELSTER connector is a production-grade Model Context Protocol (MCP) server. AI agents can read and write ELSTER data — accounting, legal — through one consistent interface. Open-source under AGPL-3.0, self-hosted, with reversible PII redaction at the LLM boundary.

Authentication & setup

The ELSTER connector authenticates via HTTP Basic auth.

Username + password / app password

For self-hosted or legacy services. Use an app password when the provider supports them.

Frequently paired with ELSTER

FAQ

Can a WorkAist AI agent really automate ELSTER end-to-end?

Yes. The connector exposes read and write tools through Model Context Protocol. AI agents call them through plain-language instructions in a CLAUDE.md file — no glue code.

How does this differ from using the ELSTER API directly?

The connector adds permission isolation, audit logging, cost tracking per agent, and reversible PII redaction at the LLM boundary. It also presents ELSTER as part of a unified Knowledge Graph alongside your other tools.

What does it cost?

WorkAist is open-source under AGPL-3.0 and self-hosted, so the connector itself is free. You pay only for ELSTER's own API costs (if any) and the LLM tokens your agent consumes.

Is my ELSTER data sent to a third party?

No. WorkAist runs in your own infrastructure. Data flows from ELSTER → your WorkAist instance → the LLM you choose. Sensitive fields can be tokenized before reaching the LLM.

What if ELSTER changes its API?

The connector is versioned and published openly. When ELSTER ships breaking changes, we bump the connector version and the marketplace UI surfaces the upgrade as a one-click apply.

Source code on GitHub · Licensed under AGPL-3.0 · Self-hosted, your data stays yours.