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Sweep 29 Sep 2026 · 18:10Z Build v2.1.285 506 read Stable v2.1.280 Latest v2.1.285 Next v2.1.285 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.285 ·

Some endpoint environment variables are now treated differently by Claude Code

A check on environment variable names now excludes ANTHROPIC_UNIX_SOCKET and AWS_ENDPOINT_URL names, and includes CLAUDE_CODE_API_BASE_URL only for files

Under the hood Internal Changes
JSON All of v2.1.285
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Environment VariablesArea: what it touches
Internal ChangesKind: in v2.1.285,
Internal ChangesSection of the release
What

Claude Code has a check that sorts environment variables by name. It now works like this:

Why

These variables point Claude Code or AWS tools at a different server address. If you set any of them, how Claude Code passes them on or handles them may have changed.

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 this check controls, for example whether it decides which variables are passed on or hidden, is not clear.

See this entry in the whole of v2.1.285 →

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