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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

/autocompact ungated, plus an --autocompact CLI option

You can now set when auto-compaction kicks in with a new --autocompact flag, and /autocompact works for everyone.

Use it now Notable New Features
JSON All of v2.1.221
Use it nowTier: how much it should matter to you
5Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
CompactionArea: what it touches
New FeaturesKind: in v2.1.221,
What probably matters to youSection of the release
What

The autocompact slash command no longer checks remote config, and there is now a real --autocompact flag whose value is applied to the session instead of being discarded.

Details
  • isEnabled for the slash command dropped its remote-config check, which previously required tengu_amber_redwood2 or tengu_amber_redwood3; it is now enabled outside the thin-client case.
  • New CLI option --autocompact <auto|tokens> sets how full the context gets before auto-summarizing.
  • The parsed value now reaches the session's auto-compact window; the previous code hardcoded undefined and always fell back to the stored setting.
Usage
claude --autocompact auto
claude --autocompact 120000
Evidence

Set how full the context gets before auto-summarizing

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

Read from
Names in the bundle--autocompact/autocompact
Feature flag
tengu_amber_redwood2 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 v2.1.221: not a boolean we can read

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.

tengu_amber_redwood3 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 v2.1.221: not a boolean we can read

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 v2.1.221. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Flag reading moved The flag server now returns "" for tengu_amber_redwood2, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_amber_redwood2, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.

See this across every release →

See this entry in the whole of v2.1.221 →

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