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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.267 ·

New "hermetic remote session" restriction reason

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Claude Code now recognizes hermetic remote sessions as a distinct reason certain features are unavailable

TierUnder the hoodhow much it should matter to you
Useful3my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaSessionswhat it touches
KindInternal Changesin v2.1.267,
Group of 2 Under the hood

Claude Code now recognizes hermetic remote sessions as a distinct reason certain features are unavailable

What

  • A new unavailability reason, "hermetic remote session", was added alongside existing reasons like sandboxed_entrypoint and unpinned_gateway.
  • The eligibility check for a background/remote-settings feature now returns ineligible with reason hermetic_remote_session when running under CLAUDE_CODE_REMOTE combined with CLAUDE_CODE_REMOTE_HERMETIC_MODE, checked before the existing gateway/first-party checks.

Why This lets Claude Code report the correct, specific reason a feature is unavailable when running in a hermetic remote session, instead of falling through to a generic or misleading reason.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe finding doesn't describe what a hermetic remote session is or which features it restricts.

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