You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.219,
ImprovementsSection of the release
What
Loading MCP server entries now warns when a value has leading or trailing whitespace, naming the fields involved, because the values are used exactly as written.
Details
the warning tells you to strip the whitespace rather than doing it for you
reserved-name rejections now carry a machine-readable reserved_name code alongside the existing message
Evidence
Leading or trailing whitespace in:
Strings lifted out of the shipped bundle, so the claim above can be checked against them.