You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PermissionsArea: what it touches
New FeaturesKind: in v2.1.251,
New FeaturesSection of the release
What
When a host or URL cannot be used as the target of a network permission rule, Claude Code now explains why in plain language instead of just refusing.
Details
Three reasons are produced: the value contains a wildcard, described as "a wildcard, which srt matches against every host"; it contains unsafe whitespace or control characters; or it is "longer than a hostname can be".
The validation helper runs unconditionally when a rule host is parsed.
Evidence
longer than a hostname can be
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
