Kiyoshii app icon - clipboard companion for macOS

Kiyoshii

Menu bar clipboard companion for your Mac. Copy in any app, press ⌘⇧V, and turn plain text into polished writing, translations, code help, JSON cleanup, and more—powered by Apple Intelligence on your machine. No accounts, no API keys.

Why Kiyoshii?

🧠

Local-first AI

Uses Apple’s on-device model when available. Your snippets are not sent to a custom cloud backend for transformation—no third-party AI API keys required.

🎯

Content-aware actions

Detects plain text, code, JSON, terminal errors, and shell commands and surfaces the actions that make sense for what you copied.

⚡

Always nearby

Lives in the menu bar with a global shortcut so you stay in flow without digging through menus.

📋

Clipboard & journal

Optional journal of recent plain-text copies to jump back and re-copy fast. Stored locally; disable in Settings when you do not want recording.

✨

Preset library

Writing tools, translations, code explain/fix/comments, error hints, safer shell commands, JSON structure explain and pretty format—plus favorites, hide, and restore.

🛠️

Custom workflows

Custom Prompt with freeform instructions, recent prompts, and Save as Action to build your own one-tap tools.

🕐

History & results

Transformed tab keeps recent runs—reopen, copy again, or run again on fresh clipboard text. Optional auto-copy of every successful result.

🔌

Power-user automation

Optional local HTTP control API on your Mac for scripts: list actions, run an action, and nudge the UI on the same machine.

Screenshots

Kiyoshii app interface
Kiyoshii actions and clipboard
Kiyoshii transformation workflow
Kiyoshii settings or history

Getting started

1

Install from the App Store

Get Kiyoshii on your Mac. Enable Apple Intelligence in System Settings on a supported Mac so on-device transformations are available.

2

Copy & open

Copy text in any app, then press ⌘⇧V or click the menu bar icon. Pick an action that matches what you copied.

3

Refine your setup

Favorite frequent actions, tune the clipboard journal, set launch at login, and use history to reuse results—everything stays oriented around your workflow.