You'll notice
Starting with --sdk-url and --resume now warms session and history state in parallel with the rest of startup.
When starting with --sdk-url and --resume, the CLI can now kick off an early hydrate-reads prefetch (startEarlyHydrateReads) concurrently with the rest of startup, to warm session/history state ahead of the SDK connection coming up. The result is threaded through as earlyHydrateReads in the prepared-session config.
Names in the bundle--resume
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on Common workflows touched a line naming --resume after this was published.
| [`/loop`](/docs/en/scheduled-tasks) | The current CLI session | Quick polling while a session is open. `--resume` and `--continue` restore unexpired fixed-interval loops. |common-workflows see the edit
Confirmed since
Anthropic's documentation has since written up --resume, on Claude Code changelog.
* Improved `--continue` / `--resume`: the conversation appears immediately instead of waiting for SessionStart hooks, and the first message no longer re-reads the whole transcriptchangelog see the edit
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up --resume, on Claude Code changelog.
Anthropic's release notes agree
Fixed --resume failing (and --continue opening an empty conversation) when a saved session contains an attachment entry with no payload