The session atom

A session is typically created using the function mcp-toolkit.client/create-session or mcp-toolkit.server/create-session.

It contains:

• The :initialized boolean, becomes true after the initial handshake between the client and server.
• The :protocol-version used, initialized after the initial handshake.
• :client-capabilities / :server-capabilities listing what features the remote site supports.
• Some data about the ongoing Remote Method Calls, waiting for a response.
• The locally registered resources and a maintained collection of the resources available on the remote site.
• The callbacks starting with :on-, triggered on events, some of them directly being some types of messages. Some of them are defaulting to a built-in behavior which maintain the collection of resources available on the remote site.

The session atom can be modified from the message handlers.