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Glossary

MCP Client

Reviewed 20 March 2026 Canonical definition

An MCP client is the part of an AI application or host environment that connects to MCP servers, authenticates, discovers available capabilities, and invokes tools on behalf of a user or agent workflow.

Related articles

Authentication Best Practices for Agent-to-Agent Authentication MCP Complete Guide to MCP OAuth Authentication Authentication How to Handle Dynamic Client Registration for AI Agents That Spawn and Terminate Automatically

Related terms

Magic LinksMCP (Model Context Protocol)MCP (Model-Context-Protocol) AuthenticationMCP ServerMCP Tool ApprovalMessage (A2A)