@maxhealth.tech/prefabTypeScript authoring for A2UI and MCP Apps

Build the agent UI once, server-side. Emit A2UI for native rendering or $prefab for an MCP Apps iframe.

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115+ Components

Layout, typography, data tables, charts, forms, interactive tabs, accordions, dialogs — all declarative JSON.

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Template expressions like {{ count + 1 }} with 20+ pipes. Auto-update on state changes, no framework needed.

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display() and display_a2ui() wrap your tree as a tool result. ui:// and a2ui:// resource helpers, plus input_required for the 2026-07-28 revision.

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Vanilla DOM renderer as a single IIFE script tag. Zero dependencies, zero build step for the browser.

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autoTable, autoChart, autoForm, autoMetrics — generate full UIs from raw data in one call.

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One component tree, two outputs. A2UI v1.0 validated against the official schemas, and $prefab v0.3 — a superset of the Python prefab-ui.