Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.261,
Internal ChangesSection of the release
The control-request handler for mcp_set_servers now calls a .sync("binding_changed") hook before applying server config changes, with a .sync("startup") hook invoked earlier during session init. This appears to be new plumbing for keeping an SDK host's server-binding state in sync with dynamic MCP server updates.