ARC-1 version 1.0 release cover showing the enterprise-ready open-source ADT MCP connected to ECC, S/4HANA, BTP ABAP Environment, and S/4HANA Cloud Public Edition.

ARC-1 1.0: One Deployment, Multiple SAP Systems

ARC-1 1.0 is here. When I published the first ARC-1 post, I explained why I built an MCP server for ABAP development and why security has to be part of it from the beginning. This post is not another deep dive into every tool. The release notes already do that. For version 1.0 I want to focus on what really changed: ARC-1 became more stable, it can serve multiple SAP systems from one BTP deployment, the BTP and security setup is much better documented, and the project is no longer only one repository. ...

August 3, 2026 · 12 min · 2428 words · Marian Zeis