Everything in CAP / Node.js
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Node.js: Answers in Node.js
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WebSocketCommunity only
CAP WebSocketsCAP WebSocketsThe early one, from 2021, before an adapter existed to make it ordinary. Read for what the problem looked like when it had to be solved by hand.vvdries, published 2021-01-26
Tool governanceCommunity only
A Clearer View of Your SAP Integrations Under the New API PolicyA Clearer View of Your SAP Integrations Under the New API PolicyThe SAP API Policy Evidence Skill assesses one SAP interface or usage pattern at a time against SAP API Policy v.4.2026a, reading evidence from five MCP servers, among them servers for the Business Accelerator Hub and SAP Notes, mcp-sap-docs and a read-only ARC-1, and returns one of four labels with a confidence level, an evidence table, residual risk and questions for SAP. It gives no compliant or not compliant answer on purpose, because SAP's FAQ (Q49) declines to publish a binding decision matrix, and it sends legal, commercial and roadmap questions to SAP and lowers its confidence when a source is not connected. Four sample runs show the method, among them ODP-RFC extraction labelled likely not aligned under SAP Note 3255746 and the same API_SALES_ORDER_SRV assessed differently for an autonomous agent behind a custom gateway and for a Boomi middleware flow; the SAP Notes and Business Accelerator Hub servers read SAP sites through a browser login, which the post says to use at your own risk.published 2026-06-02
Agentic Engineering for SAP BTP ExtensionsAgentic Engineering for SAP BTP ExtensionsAn agent harness coordinates code generation across isolated Git worktrees, using a skills registry, SAP CAP MCP Server, Fiori MCP Server and UI5 Web Components MCP Server for development context. The diagram shows LiteLLM as a model proxy in front of SAP AI Core, while automated checks and review gate the generated changes. The worked scenario is CAP-based extensions on BTP, with specifications written before generation and reusable skills governed across teams.
Third-Party MCP Server Access to SAP Solutions on BTPThird-Party MCP Server Access to SAP Solutions on BTPDescribes external MCP servers and custom servers on BTP, assigning their operators responsibility for authentication, scoped identity, API limits, logging and lifecycle. The permitted use remains conditional on the SAP API Policy, while SAP Integration Suite and Joule Studio are described as SAP-provided paths. Hosting a server on BTP does not automatically supply its governance controls.Dhawal Joshi, Harut Ter-Minasyan, Mirko Günther
LintingCommunity only
Introducing eslint-plugin-better-cap-config an ESLint plugin to improve CAP configurationIntroducing eslint-plugin-better-cap-config an ESLint plugin to improve CAP configurationThe author's own announcement, and precise about scope: today it catches deprecated key/value entries in CAP's JSON configuration, and the ambition is that it grows into best practices, suggestions and autofixes the way any ESLint plugin does. The implementation detail worth knowing is that it uses modern ESLint's JSON language support rather than a generic parser, which is what makes linting a configuration file rather than source code work at all.published 2025-09-08
TypeScript patternsCommunity only
Quick Implementation of DI/DI Container on SAP CAP: Node.js Hands-on PartQuick Implementation of DI/DI Container on SAP CAP: Node.js Hands-on PartThe hands-on half of a pair — the theory is in the author's earlier post — built on the official bookshop sample with the directories flattened so the pattern is visible rather than the scaffolding. Assumes CAP and TypeScript already.Umezuki, published 2025-05-02
Use TypeScript with the SAP Cloud Application Programming ModelUse TypeScript with the SAP Cloud Application Programming ModelWritten from the position of someone who avoided JavaScript for years and then had to cover CAP, which gives it a useful angle: what TypeScript buys a person arriving from a typed language, and where to start rather than how to finish. Ends on a worked example rather than a survey.KevinR, published 2024-06-24
DocumentationCommunity only
Before You Upgrade S/4HANA: Static UI5 Checks with MCPBefore You Upgrade S/4HANA: Static UI5 Checks with MCPA UI5 version upgrade checked against one app by pairing two MCP servers: the ui5_version_diff tool added to mcp-sap-docs, which reads a bundle from ui5-lib-diff downloaded once at setup and filters it by version range, change type, library or query text, and @ui5/mcp-server, whose get_project_info, get_version_info, run_ui5_linter and run_manifest_validation say what the app uses and what fails. Run with a ui5-versions-upgrade.md skill on the legacy app from From SEGW and Legacy UI5 to RAP with ARC-1, from SAPUI5 1.84.59 to 1.147.2, the diff range held 985 deprecations and 961 What's New entries, and the linting and manifest validation narrowed that to findings in this app, among them jQuery.sap.require, synchronous bootstrap, the sap_belize theme, sap.m.MessagePage and an old manifest _version. The checks read the source in a local checkout and never the deployed app, so the report is a first pass: a changelog entry is not proof that a workaround can be deleted, and the app still has to be run and tested.published 2026-05-20
Building an Enterprise-Ready SAP AI Agent with Open SourceBuilding an Enterprise-Ready SAP AI Agent with Open SourceA self-hosted chat agent for SAP systems: LibreChat as UI and orchestrator with Entra ID sign-in and SharePoint connected, a local LLM through Ollama, and two MCP servers, mcp-sap-docs for public documentation and the ADT MCP server vibing-steampunk for the system itself. The ADT server runs in its read-only mode under a technical user with display authorisations only, so the agent can find a function module and pull its source, or locate a RAP business object with its behaviour definition and projection view, but cannot change anything. Two workflows show it, explaining what BAPI_DISPUTE_CREATE does in one system and planning a RAP action from a PDF specification, where the generated ABAP is copied into Eclipse by hand; the full setup is in the marianfoo/llm-client-sap-system-integration-sharepoint repository.published 2026-03-03
Finally: An MCP Server for ABAPFinally: An MCP Server for ABAPAnnounces the ABAP variant of mcp-sap-docs, published at mcp-abap.marianzeis.de for GitHub Copilot's Agent Mode in ADT for Eclipse, which the post names as the trigger, with ABAP knowledge still a recurring problem in the models. Documentation irrelevant to ABAP was removed from the SAP docs server and the ABAP Keyword Documentation, the DSAG ABAP Development Guidelines and the ABAP Style Guide were added, with search reaching past the local index to SAP Community posts and SAP Help. Copilot in Eclipse is where the post puts the weight, because SAP Joule for Developers, ABAP AI capabilities in Eclipse is not available for S/4HANA on-premise systems; an update of 2026-02-05 adds Software Heroes as an online source and an abap_feature_matrix tool that checks feature availability across releases and ABAP Cloud, and the server runs hosted or locally with Node or Docker.published 2026-02-04
Reference appsCommunity only
Build a Business Application Using CAP for JavaBuild a Business Application Using CAP for JavaThe Java counterpart to the Node.js path — eight tutorials, around two and a half hours, from a generated project to a running service. Worth having indexed separately rather than folded in with the Node.js one: the runtimes diverge most in exactly the places a first application touches, and following the wrong path is a slow way to find that out.SAP
Build a Business Application Using CAP for Node.jsBuild a Business Application Using CAP for Node.jsThe Node.js introduction path, and the shorter of the pair — the runtime most CAP writing assumes, which is why the Java path exists separately.SAP
Develop a Full-Stack CAP Application Following SAP BTP Developer's GuideDevelop a Full-Stack CAP Application Following SAP BTP Developer's GuideThe eight-part path SAP's own Developer's Guide prescribes: a CAP service, Fiori Elements over it, custom logic, authorization, tests, and the preparation deployment needs. It is the closest thing to an official answer to 'what does a whole CAP application look like', which is why it sits under reference applications rather than under any one of the capabilities it touches.SAP
Extending SAP Sales and Service Cloud V2 Using CAPExtending SAP Sales and Service Cloud V2 Using CAPAn extension target that does not run on BTP at all — Sales and Service Cloud V2 sits directly on hyperscalers — so the separation between core and extension is enforced rather than encouraged. That constraint is what makes the post worth reading.Quablab, published 2025-07-09
From Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationFrom Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationThe CAP Operator applied to a real application rather than a sample of its own — SAP's Partner Reference Application, taken from plugin integration through containerisation to custom resources. The transition to CRDs is the part that repays attention: it is where the deployment stops being an mta and becomes Kubernetes.ChristianWeiss, published 2026-05-21
The CAPstone Project: A Journey from Component to CloudThe CAPstone Project: A Journey from Component to CloudA React and Vite front end on a CAP backend, written for two readers at once — the React developer curious about SAP, and the CAP developer wondering about modern front ends. Predates CAP's own React and Vue support.LOKESH_GHOSH, published 2025-07-05