Finance & ERP · Integration
DATEV Data Services
Add DATEV Data Services to your product for your customers, and give your AI agents governed access to it.
Embed a DATEV Data Services integration so your customers can move their own postings, invoices, and accounting documents between your product and DATEV without hand-keying them. Financial writes are idempotent, so a retry after a timeout does not post a document twice, and every call is logged per tenant so an entry can be traced back to the event that created it. Account structures and required fields differ per client, so those are mapped as configuration rather than hard-coded.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers send postings from your product to their own DATEV setup instead of exporting a file each month.
Read accounting records so your product can report against the books rather than a stale copy.
Attach invoices and supporting documents to the right entry so the audit trail stays intact.
Map each client's own account structure and required fields per tenant, with no code change for an unusual setup.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent reads recent postings and open items before answering a bookkeeping question.
An agent submits a posting within governed permissions, with the write idempotent and audited.
An agent reacts to an approved invoice and runs the next accounting step.
Example prompt
List invoices from last month that were never posted and show the account each should map to.
Set up DATEV Data Services in 4 steps
- 01Open the DATEV Data Services connector from your fastn dashboard.
- 02Have each customer authenticate their own DATEV access.
- 03Map each client's account structure and the fields your product uses, then enable actions and triggers.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the DATEV Data Services integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a DATEV Data Services integration without building it. Your customers connect their own DATEV Data Services account inside your product and work their invoices, payments and vendors there, with no per-customer code on your side.
- Handle the part that actually costs time: financial writes must be idempotent and reconcilable, because a duplicate is an accounting problem rather than a bug. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a DATEV Data Services update is not your on-call problem.
- One integration serves your product and your agents. The same governed DATEV Data Services connection powers in-product features and gives AI agents scoped, audited access, so you move financial records without hand-keying them between systems without wiring it twice.
Used by these teams
Compare with
Xero
Sage Intacct
QuickBooksOften used alongside
Tools the same teams tend to run next to DATEV Data Services, across other categories.
Shopify
Stripe
BigCommerce
AfterShipDATEV Data Services integration FAQ
How do I add a DATEV Data Services integration to my product?
Enable the DATEV Data Services connector in your fastn dashboard, then let each customer authenticate their own DATEV Data Services account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no DATEV Data Services client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own DATEV Data Services account?
Yes. Every connection is scoped to the individual customer, so each authorises their own DATEV Data Services account and only ever sees their own invoices, payments and vendors. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this DATEV Data Services integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent reads recent postings and open items before answering a bookkeeping question.
Who maintains the DATEV Data Services integration?
fastn does. When DATEV Data Services changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Is the DATEV Data Services integration safe for financial writes?
Writes are idempotent, so a retry after a timeout does not post a document twice, and every call is logged per tenant so an entry can be traced back to the event that created it. That matters more in finance than anywhere else, because a duplicate is a number somebody has to explain.
Can it handle each customer's own chart of accounts?
Yes. ERP deployments are configured to the business, so account structures, required fields and fiscal calendars differ per customer. Those are mapped per tenant as configuration, not hard-coded.
What about DATEV Data Services rate limits during a first import?
Backfills are throttled deliberately. ERP limits are often account-wide rather than per-integration, so an unthrottled import can exhaust a customer's allowance and disrupt their other integrations.
What can I build with the DATEV Data Services integration?
A common starting point: send postings from your product to their own DATEV setup instead of exporting a file each month. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the DATEV Data Services integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding DATEV Data Services does not change your per-connector cost. You can start free with 3 connected accounts.
Add DATEV Data Services to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.