The MCP TypeScript SDK 1.30.0 release includes a fix for idle streamingSending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.Full definition → connections. Its server transport sends periodic keep-alive comments, small messages that signal activity without becoming tool results.
The implementation description explains that idle connections can otherwise be closed by intermediaries or server timeouts, forcing clients to reconnect. Keep-alive comments are discarded by the stream parser, preserving the distinction between connection maintenance and application messages. The release also lists a separate fix to the lifecycle of the keep-alive timer in the same transport.
Terms in this piece · Glossary
MCP — The Model Context Protocol — an open standard that lets any AI assistant plug into any tool or data source without custom integration code.
streaming — Sending a model's response token by token as it is generated, so the reader sees text immediately instead of waiting for the whole answer.
