zot-copy

Copy the last agent response to the system clipboard.

Install

zot ext install https://github.com/unlight/zot-copy-last

Or run ad-hoc:

zot --ext ./zot-copy-last

Restart zot after installing or updating.

Type:

/copy

Copies the most recent agent response from the current session to the system clipboard and posts a confirmation note back into the chat.

Event subscription — the extension subscribes to assistant_message and keeps the last non-empty text. turn_start and session_end clear the cache, so /copy never returns a preamble left over from an earlier step.
Clipboard write — on /copy the stored text is written through the platform clipboard tool: pbcopy on macOS, wl-copy / xclip / xsel on Linux. Candidates are tried in order; a broken tool does not stop the fallback chain.
Encoding — frames are read and written as UTF-8 regardless of the host locale, and clipboard payloads are handed over as UTF-8 too.
Transcript fallback — a session loaded with /sessions replays no events, so when the cache is empty /copy reads the last assistant message from <state dir>/sessions/<hash of cwd>/*.jsonl instead of failing.

A /btw side dialog emits assistant_message attributed to the active session (host behaviour), so its reply can replace the text /copy reads.
Only the Linux and macOS clipboard tools are supported.
The transcript fallback depends on zot's state layout (no host API exposes the session file), so a future change there degrades /copy back to "nothing to copy" rather than to a wrong answer.

The extension is a single executable Python script — no build step.

chmod +x copy.py
python3 -m unittest test_copy -v

The tests drive the real subprocess over stdio and stub the clipboard tool, so no zot session and no clipboard access are needed.

zot-copy-last/
├── extension.json   # manifest
├── copy.py          # source code
└── test_copy.py     # wire-level tests