Under the hood
Tools from MCP servers are now deferred from loading by default, with one new exception condition
What
Tools that come from MCP servers (Model Context Protocol, a way to connect external tools to Claude Code) are now deferred (not loaded immediately) unconditionally, whereas before this was gated behind a feature check. The only exception is when a new internal condition is true, in which case deferral is skipped entirely.
Why
This tightens when MCP tools get loaded up front, likely to reduce unnecessary upfront loading, though the specific new exception condition isn't named in a way that says what it represents.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The new condition that skips deferral (`Xzt()`) isn't identified, so it's unclear what circumstance it represents.