Architecture diagram showing Joule Studio using ARC-1 on SAP BTP to access ABAP system context through governed MCP and SAP connectivity.

ARC-1 with Joule Studio: Bringing Real ABAP System Context into Joule

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. In the previous post, I showed ARC-1 with Microsoft Copilot Studio. The idea was that SAP system context should not be locked inside a local IDE. If ARC-1 runs centrally on SAP BTP, it can also be used from Teams, Microsoft 365 Copilot, SharePoint, Jira, and other places where functional consultants, architects, support teams, and project leads already work. ...

May 6, 2026 · 10 min · 2074 words · Marian Zeis
Architecture diagram showing Microsoft Copilot Studio and Microsoft 365 Copilot connecting through ARC-1 on SAP BTP to SAP ABAP systems.

ARC-1 with Copilot Studio: SAP System Context Beyond Developers

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. In the previous post, I wrote about running ARC-1 on SAP BTP. That was the architecture part: central deployment, XSUAA, destinations, Cloud Connector, Principal Propagation, roles, and auditability. This post is the next step. If ARC-1 is already deployed centrally on BTP, then it does not have to be used only from developer tools like VS Code, Claude, Cursor, or Eclipse. It can also be used from Microsoft Copilot Studio and then published into Teams or Microsoft 365 Copilot. That changes the audience quite a bit. ...

May 4, 2026 · 12 min · 2375 words · Marian Zeis
ARC-1 on SAP BTP architecture diagram showing AI clients, MCP Gateway, BTP Services, Cloud Connector, and on-premise SAP ABAP

ARC-1 on SAP BTP: Secure ABAP Agentic Development Beyond the Laptop

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. In the previous post, I introduced ARC-1 as a secure ADT MCP gateway for ABAP systems. The main point was not only that ARC-1 can expose ABAP development functionality to AI clients. The main point was that this access needs a place in the architecture. This post is about that place. If ARC-1 should not run uncontrolled on every developer laptop, then SAP BTP is the most natural enterprise option for me. Not because BTP makes the problem disappear, but because it already has the pieces you need for this kind of setup: XSUAA, destinations, Cloud Connector, role collections, audit logging, and the normal BTP operating model. ...

April 29, 2026 · 9 min · 1721 words · Marian Zeis
Diagram showing VS Code, Eclipse, Cursor, and Microsoft Copilot connecting through ARC-1 as a centrally deployed ADT MCP gateway on SAP BTP or an own server to ABAP systems on-premise, private cloud, and SAP BTP ABAP Environment.

Introducing ARC-1: A Secure ADT MCP Server for Enterprise SAP Development

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. In the first post of this series, I wrote about context and how I use AI in development. In the previous post, I then moved that discussion into ABAP and ended more or less with one question: what would an ADT MCP setup need to look like if you take control, identity, and security seriously from the beginning? ...

April 27, 2026 · 13 min · 2742 words · Marian Zeis
Diagram showing a safer ABAP AI development pattern with a local IDE and LLM, git repository, CI/CD, and a read-only ADT MCP server connected to the SAP system.

ABAP and Agentic AI: The Hidden Problem in Real Projects

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. In the first post of this series, I wrote more generally about how I use AI today, why context matters so much, and why I am still not fully convinced by the more maximalist agentic hype. Here I want to get more concrete. Because SAP development is not one thing, and that matters a lot for AI. ...

April 22, 2026 · 13 min · 2625 words · Marian Zeis
Screenshot of the AI development workflow with ChatGPT, Claude Code, and MCP servers.

How I Use AI for Development and Why Context Matters

Series note: This post is part of my AI ABAP development series, where I go from AI development in general, to ABAP-specific problems, and then to ARC-1. When it comes to AI, I do not really think about magic. I think more about another colleague helping me out. Sometimes that means architecture. Sometimes implementation. Sometimes testing, review, CI/CD, or deployment. But this only works with trust, and trust needs communication. If I do not know something, I ask. If code looks strange, I ask. If tests fail, I ask. ...

April 20, 2026 · 10 min · 2037 words · Marian Zeis
Screenshot of the sap-ai-mcp-servers README showing the overview tables and categories.

SAP MCP Servers: The Missing Overview

If you are searching for SAP MCP Servers (Model Context Protocol), you quickly run into the same problem: Which SAP MCP servers exist (official and community), and what other SAP AI tooling should you know about? That is why I like this new repo: marianfoo/sap-ai-mcp-servers: SAP MCP Servers and SAP AI Skills list It is a curated list of SAP MCP servers, SAP AI skills, and adjacent developer tools. The README is structured as tables so you can scan by category, compare licenses, and see what is actively maintained. ...

March 5, 2026 · 2 min · 239 words · Marian Zeis
Bar chart showing cumulative ABAP understanding success rates by model and feedback round.

SAP’s ABAP-1 Loses Every ABAP Benchmark, Even “Explaining”

Previous post (code generation benchmark): Benchmarking LLMs for ABAP Live benchmark results (old + new): abap-llm-benchmark.marianzeis.de In my first evaluation (based on the TH Köln benchmark paper), I extended the original setup with additional models and focused on a very concrete question: how well can LLMs generate ABAP code that actually compiles and passes ABAP Unit tests? I also tested SAP’s model ABAP-1, and it performed very poorly for code generation. To be fair: SAP also states this in the documentation. ABAP-1 is primarily meant for explaining ABAP code not for reliably generating full working implementations. ...

March 3, 2026 · 5 min · 1005 words · Marian Zeis
Bar chart showing cumulative ABAP code generation success rates by model and feedback round.

Benchmarking LLMs for ABAP: Why ABAP-1 Isn't a Code Generator (Yet)

Live benchmark results: abap-llm-benchmark.marianzeis.de In a lot of SAP webcasts and webinars, especially around AI, the question comes up very early: which model are you using, and which one do you recommend? For CAP and UI5 the answer is usually pretty simple: use the current best model from Anthropic. If you add good context via MCP servers from the community or SAP, you are basically fine. There is just a lot of public knowledge available, and most of it is in JavaScript/TypeScript, which LLMs handle extremely well. ...

February 9, 2026 · 6 min · 1255 words · Marian Zeis
Screenshot of Eclipse showing GitHub Copilot working with the ABAP MCP server.

Finally: An MCP Server for ABAP

Finally, there is an MCP server for ABAP. You can use it directly in Eclipse via https://mcp-abap.marianzeis.de/mcp. Setup instructions are here: Eclipse configuration (GitHub Copilot) Why a community ABAP MCP server? SAP has announced an MCP server for ABAP, so why create a community one? The trigger for me was the release of Agent Mode in GitHub Copilot for ADT, which finally makes it possible to edit ABAP code by Copilot. LLM models are already really good, but ABAP knowledge is still a recurring problem. So I wanted an MCP server that is actually tailored for ABAP. ...

February 4, 2026 · 3 min · 476 words · Marian Zeis