@modelcontextprotocol/sdk
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    Interface StreamableHTTPServerTransportOptions

    Configuration options for StreamableHTTPServerTransport

    interface StreamableHTTPServerTransportOptions {
        enableJsonResponse?: boolean;
        eventStore?: EventStore;
        onsessioninitialized?: (sessionId: string) => void;
        sessionIdGenerator: (() => string) | undefined;
    }
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    Properties

    enableJsonResponse? eventStore? onsessioninitialized? sessionIdGenerator

    Properties

    enableJsonResponse?: boolean

    If true, the server will return JSON responses instead of starting an SSE stream. This can be useful for simple request/response scenarios without streaming. Default is false (SSE streams are preferred).

    eventStore?: EventStore

    Event store for resumability support If provided, resumability will be enabled, allowing clients to reconnect and resume messages

    onsessioninitialized?: (sessionId: string) => void

    A callback for session initialization events This is called when the server initializes a new session. Useful in cases when you need to register multiple mcp sessions and need to keep track of them.

    Type Declaration

      • (sessionId: string): void

      • Parameters

        • sessionId: string

          The generated session ID

        Returns void

    sessionIdGenerator: (() => string) | undefined

    Function that generates a session ID for the transport. The session ID SHOULD be globally unique and cryptographically secure (e.g., a securely generated UUID, a JWT, or a cryptographic hash)

    Return undefined to disable session management.

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