origin

type Origin struct {
	// Agent is the client identifier captured from the MCP initialize
	// handshake's clientInfo, e.g. "someclient/0.7.2". This names the
	// host application, not the model driving it - MCP carries no model field.
	Agent string
	// UserAgent is the raw HTTP User-Agent header of the client, captured on
	// the Streamable-HTTP transport only (empty over stdio). It is a second,
	// out-of-band identity signal: some hosts encode a build or channel here
	// that clientInfo omits. It is still the host's UA, not a guaranteed model.
	UserAgent string
}