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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 ·

Sessions authenticated through a gateway attach a pinned identity

Gateway-authenticated sessions now attach a pinned identity tying them to one gateway origin.

Under the hood In Development
JSON All of v2.1.251
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
AuthArea: what it touches
In DevelopmentKind: in v2.1.251,
In DevelopmentSection of the release
What

Accounts that authenticate through a gateway token now send a consent identity and a pinned fingerprint alongside the usual authorization header, tying the session to one specific gateway origin. The identity is built from a fixed gateway: tag plus the gateway's https origin, and the account identifier is hashed with SHA-256 once it passes a length threshold rather than being sent as-is.

Details
  • only applies when gateway token auth is in use; API key and OAuth sessions keep their existing consent identity path
  • the hashing means the raw account identifier does not travel in the header
Evidence

gateway:, organizationUuid: ${pe}${o}#${t}``

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

See this entry in the whole of v2.1.251 →

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