Auto-copy OpenAI Codex dictation to clipboard on macOS using Karabiner-Elements

A developer created a Karabiner-Elements rule that intercepts OpenAI Codex's dictation shortcut (Ctrl-Shift-V) and automatically copies the transcribed text to the macOS clipboard. The rule polls the transcription history file for new entries and pipes the text to pbcopy, enabling Codex dictation to be used in any application.

OpenAI Codex's dictation shortcut Ctrl-Shift-V transcribes your voice and writes the result to ~/.codex/transcription-history.jsonl — but doesn't copy it to the clipboard. This setup does. This means you can use Codex to transcribe text to anywhere in your laptop, not just as prompts to Codex Karabiner-Elements intercepts Ctrl-Shift-V , passes it through to Codex as normal, then on key-up fires a background script via to after key up .- The script snapshots the current line count of the transcription file, then polls every 0.5s for a new entry up to 30s timeout . - When a new line appears, it extracts the text field, pipes it to pbcopy , and sends a macOS notification with the copied text. mkdir -p ~/.local/bin download codex-transcription-copy from this gist to ~/.local/bin/codex-transcription-copy chmod +x ~/.local/bin/codex-transcription-copy mkdir -p ~/.config/karabiner/assets/complex modifications download codex transcription copy.json from this gist to that directory Then in Karabiner-Elements → Complex Modifications → Add rule , enable "Codex: copy transcription on Ctrl-Shift-V release" . - macOS with Karabiner-Elements https://karabiner-elements.pqrs.org/ installed - Python 3 ships with macOS OpenAI Codex https://openai.com/codex/ desktop app with the following hold-to-dictate hotkey configured: Karabiner logs script output to /tmp/karabiner-codex-copy.log .