Variable McpServerError`Const`

McpServerError: Trace.EventType<
    {
        message: string;
        protocol: "http"
        | "sse";
        unauthorized?: boolean;
        url: string;
    },
> = ...

Emitted when an MCP server connection fails for a request turn. Ephemeral so that misconfigured/unreachable servers don't pollute the durable feed, but can still be surfaced to the user via the live ephemeral event stream.