What it is
Copy the last assistant response to clipboard. Pass a number N to copy the Nth-latest response: /copy 2 copies the second-to-last. When code blocks are present, shows an interactive picker to select individual blocks or the full response. Press w in the picker to write the selection to a file instead of the clipboard, which is useful over SSH
Anthropic's own wording. Read off Commands, captured 2026-09-22.
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.
First cited
2The earliest release whose published evidence quoted /copy was v2.1.77, 16 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 above.
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.