Unfragile

The request "ui-uitk" most closely matches Unity's UI Toolkit, which Unity's own action record describes as a skill for UXML and USS UI Toolkit work 11. Unity itself is the game engine that hosts it 1, and the other listed products cover different UI frameworks or languages.

1
Unityunity.comverified and signed
Unity is a 3D game engine for building apps and games across mobile, PC, console, XR and industrial platforms 1, and its ui-uitk action generates and edits UI Toolkit UXML and USS with flex layouts 11.
Website Docs Pricing Get started
for agents: ui-uitk · ui · ui-ugui
2
Slintslint.devwebsite read, tools not yet checked
Slint is a declarative GUI toolkit for Rust, C++, JavaScript and Python for building native UIs across embedded, desktop and web from one codebase 3.
Website Docs Pricing
+1 community tools built for it
3
GTKgtk.orgwebsite read, tools not yet checked
GTK is a free and open-source cross-platform widget toolkit for creating graphical user interfaces 6.
Website Docs
4
Ignite UIigniteui.comfound in code, not yet checked
Ignite UI is a web developer toolkit offering UI components and controls for Angular, ASP.NET, Blazor, jQuery, React and Web Components 4.
Website
for agents: list_components · get_api_reference · search_docs

Sources

1Unity: Develop, Deploy, and Grow | The World's Leading Game Engineunity.com · read 2026-10-29
3Slint | Declarative GUI for Rust, C++, JavaScript & Pythonslint.dev · read 2026-10-29
4JavaScript UI Design Software & User Interface Components | Infragisticsinfragistics.com · read 2026-10-30
6The GTK Project - A free and open-source cross-platform widget toolkitgtk.org · read 2026-10-29
11ui-uitk: declares "ui-uitk" (the record we read and signed)unfragile.ai · read 2026-10-24

For agents: the 10 actions behind this answer

ui-uitk · ui-uitk verified and signed
Understands, edits, and generates Unity UI Toolkit UXML and USS with flex layouts. Use for requests involving UI Toolkit, UIElements, UIDocument, PanelSettings, custom elements, or UI runtime binding.
webapp-testing · webapp-testing verified and signed
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
· Slint website read, tools not yet checked
Slint is a declarative GUI toolkit for Rust, C++, JavaScript & Python — build native UIs for embedded, desktop, and web from a single codebase.
list_components · igniteui-mcp found in code, not yet checked
List available Ignite UI component docs. Filter by framework and optionally by keyword match against filename, component, toc_name, keywords, summary.
tool-ui · tool-ui verified and signed
Find, install, configure, and integrate Tool UI components in React apps using shadcn registry entries, compatibility checks, scaffolded runtime wiring, toolkit setup with assistant-ui, and troubleshooting workflows. Use when developers ask to add one or more Tool UI components, choose components fo
· Gtk website read, tools not yet checked
GTK is a free and open-source cross-platform widget toolkit for creating graphical user interfaces.
· kickstartDS website read, tools not yet checked
kickstartDS is a comprehensive component and pattern library, enabling web development teams to create consistent and brand compliant web frontends super efficiently
nuxt-ui · nuxt-ui verified and signed
Build UIs with @nuxt/ui v4 — 125+ accessible Vue components with Tailwind CSS theming. Use when creating interfaces, customizing themes to match a brand, building forms, or composing layouts like dashboards, docs sites, and chat interfaces.
21st-ai · 21st-ai verified and signed
Generate and iterate on UI with 21st AI from the terminal via the `21st` CLI (`@21st-dev/cli`): sketch a UI from a prompt, preview the variants in the browser, edit any variant in place with a natural-language change, and pull the final code into the project. Use whenever the user wants to BUILD / S
kumo-design · kumo-design verified and signed
Cloudflare product design guidance. Use when designing, implementing, or reviewing Cloudflare dashboard interfaces, Kumo UI, responsive styling, dialogs, or frontend tests.

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