NitroStack

The enterprise-grade TypeScript framework for building production-ready MCP servers.

Decorators. Dependency Injection. Widgets. One framework to ship AI-native backends.

Documentation  ·  Quick Start  ·  Blog  ·  NitroStudio  ·  Discord

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Quick Start

Prerequisites

• Node.js >= 20.18 (download)
• npm >= 9

1. Scaffold a new project

npx @nitrostack/cli init my-server

2. Start developing

cd my-server
npm install
npm run dev

Your MCP server is running. Connect it to any MCP-compatible client.

3. Open in NitroStudio

Once your project is scaffolded, open the same folder in NitroStudio for visual testing and debugging.

• Download: https://nitrostack.ai/studio
• Open your my-server project folder
• Use NitroStudio to test tools, inspect payloads, and chat with your MCP server

Why NitroStack?

Building MCP servers today means stitching together boilerplate, reinventing authentication, and hoping your tooling scales. NitroStack gives you an opinionated, batteries-included framework so you can focus on what your server actually does.

• Decorator-driven — Define tools, resources, and prompts with clean, declarative TypeScript decorators
• Dependency injection — First-class DI container with singleton, transient, and scoped lifecycles
• Auth built in — JWT, OAuth 2.1, and API key authentication out of the box
• Middleware pipeline — Guards, interceptors, pipes, and exception filters just like enterprise backends
• UI Widgets — Attach React components to tool outputs for rich, interactive responses
• Zod validation — End-to-end type safety from schema to runtime
• NitroStudio — A dedicated desktop app for testing, debugging, and chatting with your server

See It in Action

import { McpApp, Module, ToolDecorator as Tool, z, ExecutionContext } from '@nitrostack/core';

@McpApp({
  module: AppModule,
  server: { name: 'my-server', version: '1.0.0' }
})
@Module({ imports: [] })
export class AppModule {}

export class SearchTools {
  @Tool({
    name: 'search_products',
    description: 'Search the product catalog',
    inputSchema: z.object({
      query: z.string().describe('Search query'),
      maxResults: z.number().default(10)
    })
  })
  @UseGuards(ApiKeyGuard)
  @Cache({ ttl: 300 })
  @Widget('product-grid')
  async search(input: { query: string; maxResults: number }, ctx: ExecutionContext) {
    ctx.logger.info('Searching products', { query: input.query });
    return this.productService.search(input.query, input.maxResults);
  }
}

One decorator stack gives you: API definition + validation + auth + caching + UI — zero boilerplate.

Ecosystem

NitroStack is modular. Install only what you need: The implementation workspace for NitroStack packages lives in typescript/.

Package	What it does	Install
@nitrostack/core	The framework — decorators, DI, server runtime	npm i @nitrostack/core
@nitrostack/cli	Scaffolding, dev server, code generators	npm i -g @nitrostack/cli
@nitrostack/widgets	React SDK for interactive tool output UIs	npm i @nitrostack/widgets

NitroStudio

NitroStudio is a desktop app purpose-built for developing MCP servers. Open your project folder — it handles the dev server for you.

Download NitroStudio

Real-time tool testing Execute tools, inspect payloads, and debug request/response cycles.

Built-in AI chat Talk to your MCP server through an integrated AI assistant.

• Widget preview — Instantly visualize your interactive UI components
• Hot reload — Changes reflect in real time as you develop

Documentation

Resource	Description
Getting Started	Installation, quick start, and first project
Server Concepts	Modules, DI, and architecture deep dive
Tools Guide	Defining tools, validation, annotations
Widgets Guide	Building interactive UI components
Authentication	JWT, OAuth 2.1, API key setup
CLI Reference	All CLI commands and options
Deployment	Production checklist, Docker, cloud platforms

Community

• Discord — Ask questions, share projects, get help
• GitHub Discussions — Proposals, ideas, and Q&A
• Twitter / X — Announcements and updates
• YouTube — Product demos and walkthroughs
• LinkedIn — Company news and updates
• GitHub — Organization profile and open-source work
• Blog — Tutorials, deep dives, and release notes

Contributing

We welcome contributions of all kinds — bug fixes, features, docs, and ideas. Read the Contributing Guide to get started.

Looking for a place to begin? Check out issues labeled good first issue.

Contributors

License

NitroStack is open-source software licensed under the Apache License 2.0.

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_{Built by the NitroStack team and contributors.}