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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

New adjustable maximum age, settable by environment variable or by the server

Claude Code gained a maximum-age limit read from an environment variable or the server, with a 90-minute floor on the server value

Under the hood Internal Changes
JSON All of v2.1.311
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SettingsArea: what it touches
Internal ChangesKind: in v2.1.311,
Internal ChangesSection of the release

Unclear What the maximum age applies to, and which environment variable sets it, is not stated.

What

Claude Code has a new maximum-age limit. It takes the value from an environment variable first. If that is not set, it uses a number sent by the server, which is accepted only if it falls within a set range. The lowest allowed server value is 5,400,000 milliseconds, which is 90 minutes.

The limit is skipped in two cases:

  • when a server-controlled switch is on; that switch counts as on if the server sends nothing, so by default no limit is applied
  • when the session was started by a remote cowork trigger
Why

This gives a time limit on something in Claude Code that the server can tune. As built, the limit is not applied unless the server switch is turned off.

Read from
Feature flag
tengu_rosy_puddle Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.311: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.311. It isn't a statement about your account. What a flag value here can and cannot tell you

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 doubtWhat the maximum age applies to, and which environment variable sets it, is not stated.
The name it cites is new in this buildNew in this build: tengu_rosy_puddle

See this entry in the whole of v2.1.311 →

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