API-first access
Retrieve and submit receipts, entries, and reports programmatically – via a clear REST API with bearer auth.
For developers
Bookkeeping via API & MCP – without your own bookkeeping logic
Building apps, SaaS or tools? Connect real bookkeeping via API, soon also via MCP and webhooks. We post in the background – with real bookkeepers instead of just software.
{ "id": "bel_9f2a7c", "betrag": 1190.00, "status": "verbucht", "datev_export": true}
201 Created
142 ms
webhook · beleg.verbucht
Bookkeeping as infrastructure
Focus on your product – we deliver the bookkeeping as a clean interface. No bookkeeping backend of your own, no tax logic, no maintenance overhead.
MCP – coming soon
An MCP server is in the works: AI assistants like Claude will soon access your bookkeeping directly – coming soon.
Webhooks & Events
React in real time to new entries, processed receipts, or completed reports – with no polling at all.
DATEV & CSV export
Export all booked data in DATEV- or CSV-compliant format – for tax advisors and existing systems.
Real bookkeepers instead of just software
Behind the API, real bookkeepers check and post your receipts – DSGVO- & GoBD-compliant, from Germany.
Scales with you
From your first test receipt to a growing SaaS – the integration scales with your product, with no rebuilding required.
API & MCP
API access included – MCP coming soon
API access is included in your plan – as an add-on at 0 €/month. You submit receipts, query bookings, and pull reports programmatically, without building any accounting logic yourself.
And there's more: an MCP server is in development, so AI assistants like Claude can access your bookkeeping directly – submit receipts, review bookings, retrieve reports. Coming soon.
- API usage: 0 €/month
- MCP server – coming soon
- Webhooks for real-time events
- DATEV & CSV export
Integrated in three steps
Little time passes from sign-up to your first retrieved booking – without a bookkeeping system of your own.
1
Account & API key
Sign up, choose your plan and create your personal API key. API usage is included at 0 €/month.
2
Receipts via API/upload
Submit receipts and transactions programmatically via the API or upload them. Webhooks keep your system up to date.
3
Retrieve bookings & reports
Real bookkeepers post your data. You can pull transactions, BWA, SuSa and DATEV exports anytime via API.
Get started
Build your product – we handle the bookkeeping
Start for free, create your API key and integrate real bookkeeping in just a few steps. MCP server coming soon.
Start for free
API usage €0/month · No credit card required · Cancel anytime
Frequently asked questions about Buchführungsheld
Here you'll find answers about our pricing, features, and using the App.
How do I authenticate with the API?
You create a personal API key in your account and send it as a bearer token in the Authorization header of every request. The key can be rotated or revoked anytime – so you keep full control over your integration.
What does using the API cost?
API access is included in your plan and costs you 0 €/month as an add-on. You only pay your regular bookkeeping plan – the programmatic integration comes at no extra charge.
When is the MCP server coming?
Our MCP server (Model Context Protocol) is currently in development and coming soon. It lets AI assistants like Claude access your bookkeeping directly and securely – submit receipts, query bookings or pull reports, all without a custom integration layer.
Can I export DATEV data?
Yes. All booked data is available to you as a DATEV and CSV export – retrievable via API or as a download. That way your tax advisor and your existing systems stay cleanly connected.
Is the processing GDPR-compliant?
Yes. The processing is GDPR- and GoBD-compliant, hosted in an ISO 27001-certified data center in Germany. On request, we'll conclude a data processing agreement (DPA) with you.
Who books in the end – software or a person?
Behind the API are real bookkeepers. Your receipts and revenue are checked and correctly posted by professionals – not just AI automation. You get clean bookkeeping without having to build bookkeeping logic yourself.