Follow Discord
Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.265 ·

Headless cloud sessions gain a serve-only mode

← All of v2.1.265 Home All releases

Headless cloud session create/attach now support a serveOnly option that reduces the active feature set

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaCloud Sessionswhat it touches
KindIn Developmentin v2.1.265,
Group of 3 Nothing to try yet No documentation found

Headless cloud session create/attach now support a serveOnly option that reduces the active feature set

What

The headless cloud-session bootstrap path (used when running the CLI to create or attach to a session on Anthropic's cloud) now supports a serveOnly option:

  • The create path calls a renamed runHeadlessCloudCreate function and passes { serveOnly: C.serveOnly } into runHeadlessCloudAttach.
  • A new session-opener path with entry: "attach" accepts the serveOnly option, and when set, swaps in a reduced feature set instead of the normal full feature set.

Why

This gives a way to attach to or create a headless cloud session with a minimal, serve-only feature set rather than the full normal feature set.

Read from
Names in the bundleserveOnly
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 surfaces this new attach/serveOnly session path to users, and what it's for, is not shown by the finding.

See this entry in the whole of v2.1.265 →

Feedback