Follow Discord
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
HomeReleasesv2.1.248entry #830

Claude Code v2.1.248 ·

Session-ID header name shared between call sites

The session header name comes from one constant now; the wire is unchanged.

Under the hood Internal Changes
JSON All of v2.1.248
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
InternalsArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What

The per-request session header is now emitted from a single constant instead of an inline string. The name sent on the wire is unchanged.

Evidence

X-Claude-Code-Session-Id

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

See this entry in the whole of v2.1.248 →

Feedback