You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
5Signal: worth watching, 1 to 5
ConnectorsArea: what it touches
New FeaturesKind: in v2.1.251,
What probably matters to youSection of the release
What
When a first-party document connector is attached (a Google Docs-style integration the host itself designates as first-party), asking for a page, doc, notes, memo, plan or report now goes to that connector rather than producing an HTML artifact. You still get an artifact if you ask for one explicitly, ask for an HTML or Markdown file, or ask for something app, site, dashboard or game shaped.
Details
First-party status must be asserted by the host application. A server's own name, description or instructions never make it first-party.
This is a change to the instructions Claude follows, not a flag: behaviour depends on whether such a connector is attached at the time.
Evidence
first-party is asserted by the host, never inferred from a server's own name, description, or instructions
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
