Glossary

MCP host and client

Also: MCP host · MCP client

The host is the LLM app that connects to MCP servers (Claude Code, Codex, Cursor). A client is the connector inside the host that talks to one server.

Example

Claude Code as the host keeps one client per connected server: GitHub, Sentry, the browser.

Where it shows up

An AI assistant with a fully connected stack — Post 7 of 8

Related terms

MCPModel Context Protocol MCP server

Source

Model Context Protocol — Architecture