Where does an MCP client live, and how many of them exist?

Easymcparchitectureclientparticipants

Last reviewed 22 Aug 2026

On the user's side of the exchange, meaning the person operating the application rather than any software component.
As a separate program the user installs next to the host, which brokers that host's connections.
Inside the host, but as a single component that handles every connected server through one shared channel.
Inside the host, as one component for each connected server, created by the host itself.Correct answer

Show answer & explanation

Correct answer: D. Inside the host, as one component for each connected server, created by the host itself.

Explanation

The principle — The client is a component, not an application and not a person.

Why the key is correct — MCP Client: A component that maintains a connection to an MCP server and obtains context from an MCP server for the MCP host to use. And the count follows from how they come into being: the MCP host accomplishes this by creating one MCP client for each MCP server.

Why the others are wrong — One client does not cover several servers. The user is outside the model. And no separate program is installed to broker anything.

Remember this — One host, one client per server.

Sources — MCP first-party documentation.

Sources

Primary sourceArchitecture overview — MCP · accessed 20 Aug 2026
“MCP Client: A component that maintains a connection to an MCP server and obtains context from an MCP server for the MCP host to use”
Primary sourceArchitecture overview — MCP · accessed 20 Aug 2026
“The MCP host accomplishes this by creating one MCP client for each MCP server.”

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Where does an MCP client live, and how many of them exist?

Easymcparchitectureclientparticipants

Last reviewed 22 Aug 2026

On the user's side of the exchange, meaning the person operating the application rather than any software component.
As a separate program the user installs next to the host, which brokers that host's connections.
Inside the host, but as a single component that handles every connected server through one shared channel.
Inside the host, as one component for each connected server, created by the host itself.Correct answer

Show answer & explanation

Correct answer: D. Inside the host, as one component for each connected server, created by the host itself.

Explanation

The principle — The client is a component, not an application and not a person.

Why the others are wrong — One client does not cover several servers. The user is outside the model. And no separate program is installed to broker anything.

Remember this — One host, one client per server.

Sources — MCP first-party documentation.

Sources

Primary sourceArchitecture overview — MCP · accessed 20 Aug 2026
“MCP Client: A component that maintains a connection to an MCP server and obtains context from an MCP server for the MCP host to use”
Primary sourceArchitecture overview — MCP · accessed 20 Aug 2026
“The MCP host accomplishes this by creating one MCP client for each MCP server.”

Practise 10 questions on this topic

Take MCP Fundamentals — Timed Test 1 (10 questions) — scored instantly, explanation for every question, no login.

Start the test

Where does an MCP client live, and how many of them exist?

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Where does an MCP client live, and how many of them exist?

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