Model Context Protocol (MCP) host is the infrastructure or runtime environment such as a container virtual machine, or serverless function that that deploys and executes the MCP Server. It provides the necessary compute, networking, and execution context to invoke the tool or agentic workflow. 

Why is MCP host important?

The MCP host enables scaling, isolation, and deployment of MCP instances. MCP hosts are useful for multi-tenant setups or running different agent configurations.

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