btwld/nest-mcp
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Build Model Context Protocol (MCP) servers, clients, and gateways using the NestJS ecosystem you already know.
概要
Build Model Context Protocol (MCP) servers, clients, and gateways using the NestJS ecosystem you already know: decorators, dependency injection, modules, and guards, without learning a new framework. NestJS peer dependencies (if not already installed): Define tools with decorators and register the module: Connect to a server and inject the client: Aggregate two upstream servers behind one endpoint: Tools from upstream servers are exposed with a prefix (weather_forecast, search_query). Downstream clients see one unified server. Full documentation lives in the docs/ folder. Working examples live in the apps/ directory:
README
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nest-mcp
Build Model Context Protocol (MCP) servers, clients, and gateways using the NestJS ecosystem you already know: decorators, dependency injection, modules, and guards, without learning a new framework.
Packages
| Package | Description |
|---|---|
@nest-mcp/server |
Build MCP servers with decorators, auth, resilience, and multi-transport support |
@nest-mcp/client |
Connect to and consume MCP servers with typed injection and health checks |
@nest-mcp/gateway |
Aggregate multiple upstream servers behind one unified MCP endpoint |
@nest-mcp/common |
Shared types and utilities (peer dependency) |
Architecture
┌─────────────────────────────────────────────┐
│ AI Client (LLM host) │
└──────────────────────┬──────────────────────┘
│ MCP (Streamable HTTP / SSE / STDIO)
┌────────────▼────────────┐
│ @nest-mcp/gateway │ ← optional aggregation layer
│ (NestJS application) │
└──┬──────────────┬───────┘
│ │ upstream MCP connections (@nest-mcp/client)
┌──────────▼──┐ ┌──────▼──────┐
│ @nest-mcp/ │ │ @nest-mcp/ │ ← MCP servers built with @nest-mcp/server,
│ server A │ │ server B │ or any other MCP-compatible server
└─────────────┘ └─────────────┘
@nest-mcp/server — internal architecture
HTTP / SSE / STDIO
│
▼
┌─────────────────────────────────────────────────────────┐
│ Transport Layer │
│ (StreamableHttpService / SseService / │
│ StdioService) │
└──────────────────────┬──────────────────────────────────┘
│ MCP request (tool/resource/prompt)
▼
┌─────────────────────────────────────────────────────────┐
│ Execution Pipeline │
│ │
│ ContextFactory → McpExecutionContext │
│ │ │
│ ▼ │
│ Auth Guards (@Public / @Scopes / @Roles / @Guards) │インストール
This server does not publish a one-line install command.
Open the repository installation guide MCP 初心者？mcpskill.org のガイドから始めましょう →