You'll notice
Claude Code now listens for MCP prompt/resource list-changed updates whenever a server offers prompts or resources at all
What
When connecting to an MCP server, Claude Code used to only subscribe to notifications that a server's list of prompts or resources changed if the server explicitly advertised support for that (listChanged). Now it subscribes as soon as the server declares the prompts or resources capability at all, whether or not it explicitly says it supports change notifications.
Why
This means Claude Code can pick up updates to a server's available prompts or resources from more servers than before, including ones that didn't explicitly flag support for change notifications.
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Anthropic's release notes agree
Fixed MCP prompts and resources not refreshing when a server sends list-changed notifications without declaring listChanged