You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What
A server that does not advertise tools, resources, resource templates or prompts now short-circuits to an empty list rather than making the call.
Details
All four listings go through one memoizing wrapper keyed on server name plus config, with failures clearing the cache entry and the error recorded on the returned list.
tools/list takes an extra branch for newer protocol versions.
Evidence
resources/templates/list
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
