The production-grade, TypeScript-first framework for building MCP servers — decorators, DI, auth, and Streamable HTTP, batteries included.
Docs • Quickstart • API Reference • Discord
FrontMCP turns the Model Context Protocol into a
typed, declarative framework. You write clean @Tool, @Resource, and @App
classes; FrontMCP handles the protocol, transport, dependency injection, sessions,
auth, and execution flow — and the same server runs locally and ships to
production unchanged.
import 'reflect-metadata';
import { FrontMcp, LogLevel } from '@frontmcp/sdk';
import HelloApp from './hello.app';
@FrontMcp({
info: { name: 'Demo', version: '0.1.0' },
apps: [HelloApp],
http: { port: 3000 },
logging: { level: LogLevel.Info },
})
export default class Server {}
Why FrontMCP
- Typed by default — decorators + Zod schemas give end-to-end types from input to output, with editor autocomplete and compile-time checks.
- Batteries included — auth (OAuth/JWKS/DCR), sessions, transport, discovery, and DI are built in, not bolted on.
- Ship anywhere — one codebase deploys to Node, Vercel, AWS Lambda, Cloudflare Workers, or a serverless bundle.
- Production-minded — stateful/stateless sessions, high-availability transport, structured observability, and a 95%+ tested core.
- Extensible — plugins, lifecycle hooks, OpenAPI adapters, and external MCP sub-apps when you outgrow the defaults.
Installation
Node.js 24+ required.
# New project (recommended)
npx frontmcp create my-app
# Existing project
npm i -D frontmcp @types/node@^24
npx frontmcp init
Full setup guide: Installation · Quickstart
Capabilities
Build — decorator-configured @FrontMcp server and @App
domains; typed @Tool, @Resource, and
@Prompt primitives; @Agent multi-step chains; and
scoped Providers / DI.
Secure — Remote & Local OAuth, JWKS, DCR, per-app auth with stateful / stateless sessions (JWT or UUID transport IDs).
Connect & operate — Streamable HTTP + SSE transport,
capability discovery, elicitation,
hooks, HTTP-discoverable skills,
external MCP sub-apps, an in-process Direct Client
(connectOpenAI / connectClaude), and first-class deployment.
Extend & tooling — official plugins (Cache, Remember, CodeCall,
Dashboard), the OpenAPI adapter, a UI library (HTML/React
widgets, SSR, MCP Bridge), an E2E testing framework, and a
CLI (create, init, dev, build, inspect, doctor).
→ Full reference: docs.agentfront.dev/frontmcp
Packages
| Package | Description |
|---|---|
@frontmcp/sdk |
Core framework — decorators, DI, flows, transport |
@frontmcp/cli |
CLI tooling (frontmcp create, dev, build) |
@frontmcp/auth |
Authentication, OAuth, JWKS, credential vault |
@frontmcp/adapters |
OpenAPI adapter for auto-generating tools |
@frontmcp/plugins |
Official plugins: Cache, Remember, CodeCall, Dashboard |
@frontmcp/testing |
E2E test framework with fixtures and matchers |
@frontmcp/ui |
React components, hooks, SSR renderers |
@frontmcp/uipack |
React-free themes, build tools, platform adapters |
@frontmcp/di |
Dependency injection container (internal) |
@frontmcp/utils |
Shared utilities — naming, URI, crypto, FS (internal) |
Version Alignment
Keep all @frontmcp/* packages on the same version. A clear "version mismatch" error is thrown at boot if versions drift. (Production Build)
Contributing
PRs welcome! See CONTRIBUTING.md for workflow, coding standards, and the PR checklist.