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NanoApps
Supports UIby jasonwells
Framework for building MCP Apps with self-contained tools and interactive HTML UIs using Bun.
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Works in:claude
Exposes:ToolsResources
What it does
NanoApps simplifies the creation of MCP Apps by allowing developers to build self-contained tools paired with interactive HTML UIs that render inline within MCP-compatible clients. It provides a high-level API (defineApp) to define tool logic and UI resources in a single package.
Key features
- Unified Tool & UI: Define tool handlers and their corresponding HTML/CSS/JS UIs in a structured directory.
- Bun-Powered: Optimized for the Bun runtime for fast execution and development.
- Flexible App Types: Supports single-tool apps with UI, tool-only apps, and multi-tool apps sharing a single UI resource.
- Built-in Auth: Integrated support for passing authentication context from HTTP middleware to tool handlers.
- Standalone Builds: Ability to bundle all dependencies into a single JS file for easy deployment.
Installation
Install via Bun:
bun add nanoapps zod
To serve as an MCP server (HTTP), mount the mcpHandler in a Hono app or use the provided CLI:
bunx nanoapps run
Supported hosts
Confirmed for Claude Desktop and other MCP-compatible clients via the standard MCP specification.
Quick install
bun add nanoapps zodInformation
- Pricing
- free
- Published
- 4/16/2026
