---
type: entity
subtype: tool
title: "TypeScript"
description: "The go-to language for building MCP servers, especially remote ones deployed to Cloudflare."
resource: "https://www.typescriptlang.org"
tags: [agent-framework, sdk]
videos: [build-and-ship-any-mcp-server-in-minutes-full-guide]
created: 2026-07-21
updated: 2026-07-21
---

# TypeScript

TypeScript is the statically typed superset of JavaScript, and in Cole's coverage it has a specific role rather than a general one: it is the default language for writing [MCP](./mcp.md) servers. He states the reason plainly while introducing his production template: "The reason that we're building this as a TypeScript MCP server is because TypeScript is becoming the go-to language for building MCPs" ([0:03:38]).

The pull is strongest for remote servers. Cole's reference build is a "chat with your Postgres database" MCP server with three tools (list tables, read-only query, write query), written against the TypeScript MCP SDK and deployed to [Cloudflare](../organizations/cloudflare.md) Workers with a single wrangler command. Cloudflare's OAuth provider handles the [GitHub](./github.md) authentication gateway server-side and a KV namespace tracks authenticated users, so the whole authenticated remote-server story is native to the TypeScript runtime rather than bolted on. Typed tool arguments (the pattern [Zod](./zod.md) formalizes) also line up with the discipline that tool schemas and descriptions are part of the LLM's prompt, so getting them well specified is context engineering, not bookkeeping.

That said, the choice is a deployment-target choice, not a dogma. Cole's Python work uses [FastMCP](./fastmcp.md) for the same shape of server, and he treats the mental model as language-agnostic: an MCP server is just an API endpoint repackaged in a standard for AI agents, which means the ordinary backend concerns (lifespan management, role-based access, input validation, monitoring with [Sentry](./sentry.md)) carry over unchanged. Pick TypeScript when the server is going remote and production-facing.

## Realizes

- [Build Your Own MCP Server](../../concepts/build-your-own-mcp-server.md) - Standing up a custom server that exposes tools to any client over a standard transport.
- [Remote MCP Server](../../concepts/remote-mcp-server.md) - The cloud-hosted, shareable server behind a production URL that TypeScript is the go-to for.
- [Tool Design](../../concepts/tool-design.md) - Few, single-purpose, well-described tools, since descriptions become part of the prompt.
- [Agent Deployment](../../concepts/agent-deployment.md) - Shipping the server to a real host with secrets, monitoring, and a public endpoint.

## Contrasts with

- [Python](./python.md) - The other main MCP language, reached for via FastMCP when the server stays local or Python-native.
- [FastMCP](./fastmcp.md) - Anthropic's high-level Python interface that covers the same server pattern with a decorator API.

## Works with

- [MCP (Model Context Protocol)](./mcp.md) - The protocol whose official SDK the template is built against.
- [Node.js](./nodejs.md) - The runtime underneath, and the packaging story for local stdio servers.
- [Zod](./zod.md) - Schema and validation library used to type tool inputs so model-passed arguments are reliable.
- [GitHub](./github.md) - The OAuth provider fronting the server, gating the sensitive write tool by login.
- [Sentry](./sentry.md) - Production monitoring, tracing, and error alerting for the deployed server.
- [Express.js](./express.md) - The minimal JavaScript backend framework used elsewhere for small API layers of the same shape.

## Related

- [Cloudflare](../organizations/cloudflare.md) - The deploy target for the remote server, supplying Workers, the OAuth provider, and KV storage.
- [MCP Transports](../../concepts/mcp-transports.md) - Streamable HTTP versus stdio, which decides whether remote hosting is even on the table.
- [MCP Authentication with OAuth](../../concepts/mcp-oauth.md) - Putting an OAuth provider in front of the server as an authentication gateway.
- [Docs and Templates as Coding-Assistant Context](../../concepts/docs-as-agent-context.md) - The payoff of the template: hand the repo plus the security checklist to a coding assistant and it builds any server you want.

## Sources

- [Build and Ship Any MCP Server in MINUTES (Full Guide)](../../sources/build-and-ship-any-mcp-server-in-minutes-full-guide.md) - "[0:03:38] The reason that we're building this as a TypeScript MCP server is because TypeScript is becoming the go-to language for building MCPs."
