UI & Frontends
ArrowJS
Agent-era UI framework with WASM sandboxes for safe generated interfaces
Category
UI & Frontends
Interfaces where agents present, generate, edit, or share work with people and other systems.
Editorial scope version 1.0 ยท effective 3 September 2026
Category listing
3 UI & Frontends Tools
Definition
What belongs in UI & Frontends?
This category covers frontend systems built around agent-generated interfaces, agent-user interaction, or shared human-agent work rather than conventional application UI alone.
Includes agent-generated or agent-editable interfaces, shared human-agent workspaces, and frontends that expose structured state, events, review, or handoff.
Scope
Inclusion and exclusion criteria
Include when
- Agents can create or materially edit the interface or its content.
- The interface exposes structured state, events, or collaboration designed for agent participation.
- Human-agent review or handoff is a documented core workflow.
Exclude when
- It is a general component library or frontend framework with no agent-specific capability.
- AI is limited to copy generation or a superficial chat widget.
Selection guide
How to compare these tools
- What can the agent create, change, or observe in the interface?
- How is state shared between the person and the agent?
- Can agent-originated changes be reviewed or attributed?
Typical use cases
- Let agents generate or update interactive user interfaces
- Share interface state between people and agents
- Review and attribute agent-originated interface changes
Category evidence
Sources for this category guidance
- Agent User Interaction Protocol overview
AG-UI documents a bidirectional, event-based protocol connecting agent backends to user-facing applications, including shared state and human-in-the-loop interrupts.
accessed 2026-09-03
Comparable facts
UI & Frontends comparison
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| Tool | Classification | Pricing | Interfaces | Deployment | Verification |
|---|---|---|---|---|---|
| ArrowJS | Agent-enabling | Open Source | JavaScript and TypeScript packages, Vite project scaffolder, agent skill | client-side browser runtime, server-side rendering and hydration, QuickJS and WebAssembly sandbox | documentation reviewed |
| Agentation | Agent-enabling | Source Available | in-browser annotation toolbar, structured Markdown export, MCP server, webhooks | development-time application embed, local MCP server | documentation reviewed |
| Proof | Agent-native | Free | web editor, HTTP agent API, agent skill, open-source SDK | hosted, self-hosted SDK | documentation reviewed |