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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 v2.1.238 ·

Per-install identifier renamed in config

Your install identifier moved to a key called machineID, so a fresh value is generated on next write.

Under the hood No documentation found Internal Changes
JSON All of v2.1.238
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ConfigurationArea: what it touches
Internal ChangesKind: in v2.1.238,
Internal ChangesSection of the release
What

The generated identifier for an installation is now stored under machineID instead of the old key name, so existing installs will generate a fresh value on next write. The helpers that create and save it now receive the config store explicitly rather than reaching for a global.

Evidence

machineID

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

Read from
Names in the bundlemachineID

See this entry in the whole of v2.1.238 →

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