Everything in UI5

Not where the UI library itself is expected to bind data: the documentation leaves binding a component's content and events to the host framework. Not from a CDN script tag: the project publishes none, so it assumes a build step.

It reads a UI5 project and the framework's own documentation, not a running system or a backend: a question about the service behind the app is answered somewhere else. Node.js v20.17 or v22.9 and above.

Its README calls it early-stage — the core workflows run end-to-end against real systems and packaging, documentation and polish are stated as still evolving. A Rust binary rather than an npm install, so the platform build matters.

Knowledge about theming, not a theme build: nothing here compiles a theme or deploys one, and it says nothing about a custom control's own parameters.

GPL-3.0, which is a licence to read before vendoring any of it into something you ship. Forty plugins is also a lot of always-available surface — the ledger is there because breadth and verification pull in opposite directions, and it does not resolve that so much as report it.

Two skills, narrowly scoped: nothing here scaffolds an application or answers what a component's API is — that is [@ui5/webcomponents-mcp-server](artifact:ui5-webcomponents-mcp-server), which reads the same library's documentation.

Guidance, not access: these are instructions handed to an agent, and what the agent can then read of your project comes from [@ui5/mcp-server](artifact:ui5-mcp-server) or the editor. A modernisation workflow that runs autonomously across a codebase is also a thing to point at a branch rather than at main.

Neither the package manifest nor the repository tree declares a licence.

Not where the UI library itself is expected to bind data: the documentation leaves binding a component's content and events to the host framework. Not from a CDN script tag: the project publishes none, so it assumes a build step.

A team that does not keep one long-lived branch per environment has no environment branches for it to compare feature branches against. What it reports is the merge state of branches in Git, so it says nothing about whether a merged change has been built or deployed to the environment.

There is nothing to run: it is published for a generator or a script to call, not for a developer to invoke in a project, and it declares Node.js 22 or later.

The class has to be moved by hand: an abapGit pull of the exported ZIP, or a paste into ADT or SE24. The palette is held to the 121 controls of UI5 1.71, and a control inserted by its class name instead comes from whatever UI5 the canvas has loaded, with nothing checking it against 1.71 - *Checks* reports that. An app class that builds no view, or more than one, is refused.

Not in a project whose dependencies must all carry an open-source licence: KAEV is proprietary software, its licence page states that downloading or viewing the npm package does not by itself grant permission to use, copy, modify, redistribute, sublicense, sell, host or create derivative works, and the LICENSE file shipped with the package carries the controlling terms. Not as the last word on whether a UI5 application is secure: its rule reference states that a heuristic finding is not proof of a vulnerability, and its documentation puts professional security review beside it rather than under it.

Lowercase HTML tags such as `<div>` typecheck but throw: the default renderer constructs UI5 controls, and the HTML-aware renderer plugin is described as planned. `withScope` restores the previous scope on a synchronous return only, so an `await` inside its callback leaks the scope on runtimes without `AsyncLocalStorage`. A view that has to stay adaptable through UI5 flexibility has no path here yet: the project's [Devtoberfest session](content:devtoberfest-2026-ui5-views-type-safe-tsx) states that flexibility support is not built in yet.

It reads a UI5 project and the framework's own documentation, not a running system or a backend: a question about the service behind the app is answered somewhere else. Node.js v20.17 or v22.9 and above.

Not where the UI library itself is expected to bind data: the documentation leaves binding a component's content and events to the host framework. Not from a CDN script tag: the project publishes none, so it assumes a build step.

Where the login cannot be completed by configuration. Its authentication page states that multi-factor authentication is not supported, because a media break between browser and phone cannot be managed out of the box.

SAP's own guidance is narrower than the service's reach: it names standalone, single-tenant applications that do not connect to other applications as the fit, and says to stay on [the HTML5 Application Repository](artifact:btp-html5-application-repository) and the application router where those meet your needs better. Four hard limits decide it before taste does — 300 requests per second per subaccount, ten retained versions per application, 100 MB per application and 400 MB for the deployment archive.

The page and the [abap2UI5](artifact:abap2ui5-abap2ui5) service have to share an origin: an `endpoint` that resolves to another origin is refused, and abap2UI5 rejects a POST whose `Origin` names another host. A host that routes by the URL hash, such as a Fiori elements app or an app with a UI5 router, needs abap2UI5 1.146.0 or later, because 1.145.0 clears the host's hash after every roundtrip. One frontend per page: the first control that starts decides which endpoint the frontend comes from.

Needs Standard ABAP 7.50 or higher, and an abap2UI5 whose frontend reserves the resourceRoot `z2ui5_cci`: a frontend predating that rename reserves `z2ui5ccc` and cannot resolve the controls. Frontend artefacts only one company needs, such as an in-house reuse library, a corporate icon font or company CSS, are what [abap2UI5-addons/custom-controls-customer](https://github.com/abap2UI5-addons/custom-controls-customer) is for, the same mechanism under the second reserved root `z2ui5_ccc`. ExportSpreadsheet needs SAPUI5: under OpenUI5 `sap.ui.export` is missing and the button renders disabled.

Not in a project whose dependencies must all carry an open-source licence: KAEV is proprietary software, its licence page states that downloading or viewing the npm package does not by itself grant permission to use, copy, modify, redistribute, sublicense, sell, host or create derivative works, and the LICENSE file shipped with the package carries the controlling terms. Not as the last word on whether a UI5 application is secure: its rule reference states that a heuristic finding is not proof of a vulnerability, and its documentation puts professional security review beside it rather than under it.

There is nothing here for ABAP for Cloud: the requirements name Standard ABAP releases only, and a CDS/SADL based OData service for `ABAP for Cloud` compatibility stands under Limitations & Todo.

Not where the UI library itself is expected to bind data: the documentation leaves binding a component's content and events to the host framework. Not from a CDN script tag: the project publishes none, so it assumes a build step.

Not where the UI library itself is expected to bind data: the documentation leaves binding a component's content and events to the host framework. Not from a CDN script tag: the project publishes none, so it assumes a build step.