typescript-sdk/.changeset/stdio-skip-non-json.md

@modelcontextprotocol/core-internal
patch

ReadBuffer.readMessage() now silently skips non-JSON lines instead of throwing SyntaxError. This prevents noisy onerror callbacks when hot-reload tools (tsx, nodemon) write debug output like "Gracefully restarting..." to stdout. Lines that parse as JSON but fail JSONRPC schema validation still throw.