Package	Purpose	React Required
`@frontmcp/uipack`	Themes, runtime helpers, build/render pipelines, validation, adapters	No
`@frontmcp/ui`	HTML/React components, layouts, widgets, web components	Yes (peer dep)

Install

npm install @frontmcp/uipack

Features

Theme system — Tailwind-style palettes, fonts, CDN assets, platform-aware inlining (docs)
Build API — compile tool templates with esbuild/SWC, emit static widgets, cached manifests (docs)
Build modes — static, dynamic, or hybrid rendering; multi-platform bundler helpers (docs)
Runtime helpers — wrap HTML/React/MDX with CSP, sanitize content, expose MCP Bridge metadata (docs)
Platform adapters — OpenAI/Claude/Gemini discovery metadata, serving modes, host capabilities (docs)
Validation — schema path extraction, Handlebars template validation, error boxes (docs)
Bundler/cache — filesystem and Redis caches, transpile/render caches, hashing utilities (docs)

Quick Example

import { buildToolUI } from '@frontmcp/uipack/build';

const result = await buildToolUI({
  template: '<div>{{output.temperature}} C</div>',
  context: { input: { location: 'London' }, output: { temperature: 18 } },
  platform: 'openai',
});

Full guide: UI Overview

Entry Points

Path	Purpose
`@frontmcp/uipack/theme`	Theme system, platform definitions, CDN helpers
`@frontmcp/uipack/runtime`	MCP Bridge runtime, CSP utilities, sanitizers
`@frontmcp/uipack/build`	Build API, static widget compiler, serving-mode resolver
`@frontmcp/uipack/adapters`	Discovery metadata + platform adapters
`@frontmcp/uipack/pages`	Prebuilt page templates (consent/error/success)
`@frontmcp/uipack/validation`	Component + template validation helpers
`@frontmcp/uipack/bundler`	esbuild/SWC bundler and cache utilities
`@frontmcp/uipack/registry`	Tool UI registry, URI helpers, render functions
`@frontmcp/uipack/types`	Shared template/context types
`@frontmcp/uipack/utils`	Escaping, safe stringify, helper utilities

Docs

Topic	Link
Overview	UI Overview
Theme system	Theming
Build API	Build Tools
Build modes	Build Modes
Runtime helpers	Runtime
Platform adapters	Adapters
Validation	Validation
Bundler	Bundler