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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
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Claude Code v2.1.228 ·

Host auth token refresh hands back the full response

Host auth token refresh now returns the whole response, but only registers when an environment variable is set.

Nothing to try yet Notable No documentation found Internal Changes
JSON All of v2.1.228
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
AgentsArea: what it touches
Internal ChangesKind: in v2.1.228,
What probably matters to youSection of the release

The host auth refresh callback is only wired up when CLAUDE_CODE_SDK_HAS_HOST_AUTH_REFRESH is set, so it does nothing otherwise.

What

The SDK control request for a host auth token refresh now resolves the whole control response rather than pulling the token field out of it, leaving that to the callback. The refresh callback is only registered when CLAUDE_CODE_SDK_HAS_HOST_AUTH_REFRESH is set, so nothing happens here otherwise.

Evidence

host_auth_token_refresh

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

Read from
Names in the bundleCLAUDE_CODE_SDK_HAS_HOST_AUTH_REFRESH

See this entry in the whole of v2.1.228 →

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