What is an MCP server?

A program that speaks the Model Context Protocol. It exposes one capability, like the filesystem, git, GitHub, or a browser. Any MCP-compatible agent can use it: Claude Code, Cursor, and others. The agent calls the server's tools through one standard interface. No custom integration per tool is needed.

How do I add an MCP server to my coding agent?

Most clients read a JSON config. It lists each server's launch command and environment. For Claude Code that is an .mcp.json file, or the claude mcp add CLI. Cursor uses .cursor/mcp.json with the same shape. Never commit secrets. Point at environment variables instead.

Top MCP Servers for Coding Agents (2026)

The Model Context Protocol (MCP) lets a coding agent call outside tools and data through one standard interface. Each server covers one job: the filesystem, git, GitHub, a browser, docs. This list sticks to durable, widely used servers with official maintainers. The fast-churning long tail is left out.

1
Filesystem (reference server)
An official Model Context Protocol reference server. It reads and writes files in a secure way. You set which folders it may touch.
Maintainer:
Model Context Protocol (official)
License:
MIT / Apache-2.0
2
Git (reference server)
An official MCP reference server. Its tools read, search, and change Git repos.
Maintainer:
Model Context Protocol (official)
License:
MIT / Apache-2.0
3
Fetch (reference server)
An official MCP reference server. It fetches web content and converts it into formats that suit LLMs.
Maintainer:
Model Context Protocol (official)
License:
MIT / Apache-2.0
4
GitHub MCP Server
GitHub's official MCP server. It connects AI tools to GitHub. They can read repos and code, manage issues and pull requests, and automate workflows.
Maintainer:
GitHub (official)
License:
MIT
5
Playwright MCP
Microsoft's official MCP server. It lets LLMs drive a browser through Playwright. It reads the accessibility tree rather than screenshots.
Maintainer:
Microsoft (official)
License:
Apache-2.0
6
Context7
An MCP server by Upstash. It fetches current, version-specific library docs and code examples. LLMs and code editors use them as context.
Maintainer:
Upstash
License:
MIT
7
Firecrawl MCP
The official Firecrawl MCP server. It adds web scraping and search. It returns clean, agent-ready content to MCP clients.
Maintainer:
Firecrawl (official)
License:
MIT
8
Sentry MCP
Sentry's official MCP server. LLM-based coding assistants use it to query Sentry issues, errors, and related data. A hosted endpoint lives at mcp.sentry.dev.
Maintainer:
Sentry (official)
Hosted:
mcp.sentry.dev

Reviewed quarterly. The MCP world churns weekly. So only first-party servers with official maintainers are listed here. Package names, transport, and install syntax change often. Re-check install commands before you rely on them. Each row carries its last-checked date and source.

Common questions

What is an MCP server?: A program that speaks the Model Context Protocol. It exposes one capability, like the filesystem, git, GitHub, or a browser. Any MCP-compatible agent can use it: Claude Code, Cursor, and others. The agent calls the server's tools through one standard interface. No custom integration per tool is needed.
How do I add an MCP server to my coding agent?: Most clients read a JSON config. It lists each server's launch command and environment. For Claude Code that is an .mcp.json file, or the claude mcp add CLI. Cursor uses .cursor/mcp.json with the same shape. Never commit secrets. Point at environment variables instead.