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Sweep 01 Oct 2026 · 17:27Z Build v2.1.287 508 read Stable v2.1.285 Latest v2.1.287 Next v2.1.287 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.287 ·

New environment variable name CLAUDE_CODE_POLL_EVENT_DECLARATIONS appears

Claude Code now lists a CLAUDE_CODE_POLL_EVENT_DECLARATIONS environment variable, though what it does is not known

Under the hood Notable No documentation found Internal Changes
JSON All of v2.1.287
Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.287,
What probably matters to youSection of the release
What

An environment variable is a named value you set outside Claude Code, for example in your shell. A new one, CLAUDE_CODE_POLL_EVENT_DECLARATIONS, now appears in Claude Code alongside CLAUDE_CODE_SYNC_SESSION_REFS and other variables in the same group.

Why

Nothing says what setting it does, so there is no known reason to set it yet.

Read from
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 doubtIt is not clear what this variable controls or what the list it belongs to is for.
The name it cites is new in this buildNew in this build: CLAUDE_CODE_POLL_EVENT_DECLARATIONS

See this entry in the whole of v2.1.287 →

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