--init-only
A Claude Code CLI flag, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
Run Setup and SessionStart hooks, then exit without starting a conversation
Anthropic's own wording. Read off CLI reference, captured 2026-09-26.
In the changelogs
3Releases whose published page names --init-only.
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v2.1.239
One shared test for whether a run is headless
One shared check now decides whether a run is non-interactive, covering print mode and piped output.
named in this entry, found in this entry's text
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v2.1.233
New hidden flag --watch-artifact
A hidden flag lets a session watch an artifact for new versions and comments, with an option to disarm auto-reply.
found in this entry's text
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v2.1.21
CLI Init Only Flag Description Update
found in this entry's text
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the CLI flag does. All CLI flags.