About Us

Klardaten provides ready-to-use solutions for recurring work in German tax firms. Klarvos turns DATEV access and tax-process knowledge into defined, traceable results. REST and MCP access remain available for software teams that want to build their own solutions.

Our Team

Klardaten is led by Sylvain Boulade, Johannes Pfeiffer, and Paweł Janik. We combine software engineering, FinTech and TaxTech experience with a practical understanding of DATEV-adjacent workflows. Our work is guided by what matters in real tax firm and partner environments: clear permissions, maintainability, security, data protection and reliable operation.

Our Story

Klardaten started with DATEV access because DATEV is the operational core system for many German tax firms. Today, this integration foundation underpins Klarvos: maintained solutions for recurring tax-firm tasks with traceable results.

Proven in daily DATEV operations

“The interface is extremely stable, and the administrative effort for managing our DATEV connections has dropped significantly.”

Stefan Johne

DATEV Interface Manager, milia GmbH

What Sets Us Apart

Finished tax solutions: Klarvos delivers defined outcomes instead of a generic chat or workflow builder.
DATEV foundation: We build around the systems, processes and operating context German tax firms already work with.
Security and compliance: Controlled access, secure transmission, hosting in Germany, GDPR and § 203 StGB are part of the product work from the beginning.
Direct implementation support: Customers work with people who understand technical integration and operational processes.

Talk to us about the right solution for your firm

Use a maintained Klarvos solution or build your own with REST and MCP. We can help you assess the right path.