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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 v2.1.251 ·

First-party behavior gated by CLAUDE_CODE_DAPPER_LAGOON

An environment variable overrides whether something counts as first-party.

Nothing to try yet Notable No documentation found In Development
JSON All of v2.1.251
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
InternalsArea: what it touches
In DevelopmentKind: in v2.1.251,
What probably matters to youSection of the release
What

A capability that decides whether something is treated as first-party is controlled by the CLAUDE_CODE_DAPPER_LAGOON environment variable. Without it, two remote flags, tengu_foamy_spring and tengu_dapper_lagoon, decide, and both default to on when the server sends nothing.

Evidence

CLAUDE_CODE_DAPPER_LAGOON

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

Read from
Names in the bundleCLAUDE_CODE_DAPPER_LAGOON
Feature flag
tengu_dapper_lagoon Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.251: not a boolean we can read

Read once, for one account on one subscription tier, against v2.1.251. 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 off for tengu_dapper_lagoon, 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 on for tengu_dapper_lagoon, 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_dapper_lagoon, 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 →

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_DAPPER_LAGOON

See this entry in the whole of v2.1.251 →

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