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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 v2.1.221 ·

Explore/plan agents no longer read a remote gate

Explore and plan agents are now always on unless you set the disable environment variable yourself.

Use it now Notable No documentation found Internal Changes
JSON All of v2.1.221
Use it nowTier: how much it should matter to you
4Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
AgentsArea: what it touches
Internal ChangesKind: in v2.1.221,
What probably matters to youSection of the release
What

The flag controlling explore/plan agents is computed purely from the environment.

Details
Evidence

CLAUDE_CODE_DISABLE_EXPLORE_PLAN_AGENTS

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

Read from
Feature flag
tengu_slate_ibis Gate removed from the code

This release deleted the gate from the code while it was still reading on for the account this site reads, so the code path no longer asks a flag before running.

This account: on · anonymous baseline: on · 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 on for tengu_slate_ibis, 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_slate_ibis, 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.
Gate removed from the code v2.1.221 removed the tengu_slate_ibis gate from the code while it was still reading on for the account this site reads. The code path no longer asks a flag before it runs.

See this across every release →

See this entry in the whole of v2.1.221 →

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