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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.251 ·

Telemetry endpoint protection now covers the environment Claude Code was launched with

Telemetry endpoints set by your launching environment are now protected too, and warnings name the real source.

You'll notice New Features
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
TelemetryArea: what it touches
New FeaturesKind: in v2.1.251,
New FeaturesSection of the release
What

The rule that stops lower-trust config, such as project or user settings, from redirecting OpenTelemetry traffic now also honours OpenTelemetry variables set by whatever process launched Claude Code, not just managed policy settings. Warnings now name the actual source that claimed the setting, for example managed settings or the host spawn environment, rather than always blaming managed settings.

Details
  • Enforcement kicks in whenever such variables are present from either source.
Evidence

is claimed by ${i}, so lower-trust scopes cannot redirect

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.251 →

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