pub const MCP_STREAM_EVENT_INIT: &str = "init";Expand description
Initial event name emitted by GET /mcp when an SSE client connects.
Used by browser-based MCP clients (e.g. the AI SDK’s
experimental_createMCPClient with the SSE transport) to confirm the
stream is live before they begin polling for server-initiated
notifications. v0.10.2 keeps the stream idle after this event —
server-initiated notifications come in v0.10.3+.