MCP TypeScript SDK

MCP TypeScript SDK is a TypeScript implementation of the Model Context Protocol, enabling the connection of AI applications to external systems, tools, and data.

The MCP TypeScript SDK provides the necessary tools to implement the Model Context Protocol in TypeScript environments. Developers use it to build servers that expose tools, resources, and prompts, allowing any compatible MCP host to access them. The SDK runs on Node.js, Bun, and Deno, facilitating integration with existing applications via frameworks like Express, Hono, Fastify, or Workers. It includes automated validation of calls against schema definitions before handlers execute. This package enables developers to build either MCP servers or clients that connect AI applications to data sources.

MCP TypeScript SDK at a glance

Best for: Software engineer
Runs on: Node.js, Bun, Deno
Pricing: Free
Released: September 2024
Category: AI coding tool
Website: ts.sdk.modelcontextprotocol.io

Key features

Implementation of the Model Context Protocol specification
Support for Node.js, Bun, and Deno runtimes
Tool definition via registerTool with input schema validation
Integration with Express, Hono, Fastify, and Workers
Schema validation using Zod objects
Stdio-based server communication

Use it for

Expose APIs and data to AI applications
Build applications that interface with MCP servers
Integrate MCP protocols into existing web frameworks

Alternatives to MCP TypeScript SDK

FastMCP TS — Provides an open-source TypeScript framework for Model Context Protocol servers.
MCP Java SDK — Official Java implementation with core STDIO, SSE, and Streamable HTTP transports.
MCP Python SDK — Builds protocol servers and clients using standard Python type hints.
MCP C# SDK — Official C# implementation for the Model Context Protocol.
MCP Toolbox for Databases — Connects AI agents to diverse enterprise databases with built-in security and observability.
MCP Rust SDK — Build official Model Context Protocol servers and clients in Rust.
MCP Apps — Enables interactive UIs like charts and forms inside AI chat clients.
AWS MCP Servers — Provides real-time access to official AWS documentation and infrastructure tools.
Spec Workflow MCP — It brings sequential spec creation and real-time tracking to your AI workflow.
Official MCP Servers — Find trusted official MCP servers without unofficial forks or abandoned projects.
MCP Server Finder — It provides a comprehensive directory with detailed profiles and compatibility matrices.
FastMCP — The standard framework for building Model Context Protocol servers and clients.

All MCP TypeScript SDK alternatives