/btw
A Claude Code slash command, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
Ask a side question about the current session without adding to the conversation. If you run /btw without a question, Claude Code shows your most recent side question so you can browse earlier answers; if you haven't asked one yet, Claude Code prints a usage line. Before v2.1.212, /btw required a question
Anthropic's own wording. Read off Commands, captured 2026-09-28.
In the changelogs
10Releases whose published page names /btw.
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v2.1.299
/btwside questions should no longer move your scroll position/btwis now marked to keep the main conversation's scroll position when you ask a quick side questionfound in this entry's text, named in this entry
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v2.1.257
/btw command reworked to track conversation history and in-flight questions
/btw now remembers past exchanges and re-shows the previous answer instead of the usage hint when re-run.
found in this entry's text, named in this entry
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v2.1.257
New "/btw" quick-command reopener in main session loop
The session loop can auto-submit /btw as a quick-capture aside when nothing else is blocking the input.
found in this entry's text, named in this entry
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v2.1.222
/btw side questions show a fallback-model notice
Side questions now show a banner naming the original and fallback model instead of switching silently.
named in this entry, found in this entry's text
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v2.1.222
/btw answers can now show a refusal-fallback notice
If a /btw answer came from a fallback model after a refusal, you now see a warning.
named in this entry, found in this entry's text
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v2.1.222
model_refusal_fallback events gain a scope field
Model fallback events now say whether the swap affects your whole session or just one subagent.
named in this entry, found in this entry's text
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v2.1.105
/btw Fork to Full Session
found in this entry's text
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v2.1.66
/btw Side Question Tip Removed
found in this entry's text
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v2.1.9
/btw Side Questions [In Development]
found in this entry's text
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v2.1.6
BTW Side Questions [In Development]
found in this entry's text
First cited
5The earliest release whose published evidence quoted /btw was v2.1.66, 4 Mar 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
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 slash command does. All slash commands.