Best MCP servers

MCP, the Model Context Protocol, is an open standard that lets AI assistants use outside tools and data. An MCP server connects one tool, such as a database, a calendar or a help desk, so assistants like Claude, ChatGPT, Cursor or VS Code can work with it directly.

Open the listing, choose your assistant and copy the install command or configuration. Most servers need one command and, where the tool requires it, an access key.

Prefer servers that are read only by default, keep a log of what they do and publish their source code. Each listing shows what the server can access and what data it collects.