<div align="center"> <img src="NotchBuddy/Assets.xcassets/AppIcon.appiconset/icon_256x256.png" width="96" alt="Coucou icon">

Coucou

A tiny friend that lives in your Mac's notch — or at the top of your screen on Windows and Linux — and keeps an eye on your AI coding agent sessions. And now on your iPhone too.

Approve permissions, watch your agents work, drop a file, chat with Claude — all without leaving what you're doing. Walk away from your Mac and Mochi follows you to your iPhone: Lock Screen, Dynamic Island, widgets, Siri.

<img src="docs/media/demo.gif" width="760" alt="Coucou in action"> </div>

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Why

Some studios showed off gorgeous notch companions… and never let anyone use them. Coucou is the open version. Every line of code is open source under the MIT License: read it, fork it, learn from it. The Coucou name, Mochi and the sounds stay © Louis Raillé (see License).

Meet Mochi: a soft little squircle with big eyes that pops out of your notch, waves hello, follows your cursor with its eyes, gets annoyed when you poke it (and dizzy if you insist), and tells you the moment Claude Code needs you.

Features

• 🤖 Claude Code, Cursor, Codex, Gemini CLI, Antigravity, Copilot CLI, Muse Code, OpenCode, Amp, Hermes, Claude Desktop and other agents, live — see every session in your notch: what it reads, edits and runs, step by step. Tag a hook payload with coucou_agent to give any agent its own pill (see docs/AGENTS.md). Finished? Mochi does a happy little jump.
• See what Claude is editing, live in the notch: each file modification shows the file name and +N −M counts in the ticker, tap to read the full diff
• ✅ Approve and answer from the notch — Claude Code permission requests show up with Allow / Deny / Always; AskUserQuestion prompts show the choices right in the notch (single or multi-select, up to 4 questions). One click, or "Reply in terminal" to fall back to the CLI. Codex also gets Allow / Deny.
• 🧑‍💻 Jump to the right terminal — open the exact terminal window of a session (macOS).
• 💬 Chat with Claude, Gemini, OpenAI, or a local model (Ollama / LM Studio) — click the model name above the chat box to switch provider and pick a model. Cloud providers use your own API key; local providers connect to a server running on your Mac. (Gemini, OpenAI and local models: macOS)
• 📊 Claude plan usage (macOS, GitHub build) — a small pill in the notch header shows your 5-hour and weekly Claude plan limits. Enable it from Settings → Agents → Plan usage. Pro and Max plans only.
• 📊 Codex plan usage (macOS, GitHub build) — a Codex pill next to it shows your Codex limits and how many free resets you have left, read from the Codex CLI. Turn it on in Settings → Agents → Plan usage.
• 📋 Declare the tools you use — open Settings → Active pills and pick your main workspace tool (VS Code, Cursor, Codex or Antigravity), then toggle up to 4 more: Gemini CLI, Anthropic, Google AI, OpenAI, Ollama, LM Studio and service integrations (macOS).
• 📎 Drop a file on the notch — Mochi turns into a box and swallows it, then ask a question about it or send it by email (email: macOS, Mail.app).
• 🖥️ Mochi on the desktop — drag Mochi out of the island to set him loose on your desktop: he floats as a 120 pt companion, follows your cursor, wears his outfit, reacts to alerts by flying home and flying back, and comes back where you left him on next launch.
• 🪟 Drag Mochi onto any window — attach that window as context for Claude (macOS).
• 🔌 Integrations — Stripe payments, n8n workflows, GitHub (open PRs, reviews requested, CI status), Vercel deployments, Resend emails, Notion, Cal.com. Each one gets its own little colored Mochi.
• 🎵 Apple Music pill (macOS, GitHub build) — add the Apple Music pill in Settings → Active pills to see what's playing and control playback from the notch; Mochi dances while it plays.
• 🎧 Spotify pill (macOS, GitHub build) — add the Spotify pill in Settings → Active pills: album cover, title and artist, a progress bar you drag to seek, play/pause, previous/next, shuffle, repeat and volume, right from the notch; Mochi dances while it plays.
• 👗 Dress Mochi up — right-click him for the wardrobe. He also dresses up for the seasons on his own.
• ⌨️ Keyboard shortcuts — open the chat, jump to an alert or a terminal, switch pills, mute, send Mochi to the desktop or open the wardrobe from anywhere; all customizable in Settings → Shortcuts.
• 🎭 A real character — idle breathing, blinks, eyes on a sphere that follow your mouse, emotes, 28 handcrafted sounds, a greeting on launch.
• 🔊 Your own sounds (macOS) — drop a file named like one of Mochi's sounds (finish.wav, approval.mp3…) in Settings → General → Sound → Open sounds folder to replace it.
• 🎙️ Dictate in the chat (macOS, GitHub build) — click the mic next to the chat field and talk in any of your languages (Coucou picks the one you spoke, or right-click the mic to choose); speech recognition runs on your Mac when it supports it.
• 🫥 Invisible when idle — hides away when nothing is running, peeks out when you hover the notch (the top edge of the screen on Windows and Linux).
• 🖥️ Any Mac, notch or not — on an iMac, a Mac mini, or a MacBook with its lid closed on an external display, Mochi sits in a small bar at the top of the screen. With several displays, pick his screen in Settings → General, or let him follow your mouse (macOS).
• 📱 Coucou on iPhone — your sessions, approvals and services in your pocket, with Live Activities, widgets and Siri. See Coucou on iPhone.
• 📅 Weekly recap (macOS) — every Monday morning Coucou shows a summary of the past week: time coding, sessions, files, lines changed, commands, permissions, top agent and project, busiest day and longest session. Share it as a 1080 × 1920 image with Mochi — project names optional. All local, no sync.
• 🌍 10 languages — English, 中文, हिन्दी, Español, العربية, Français, বাংলা, Português, Русский, Bahasa Indonesia. Pick one in Settings → General → Language; community translations welcome.
• 🔒 Private by design — no telemetry, no account. Keys live in your macOS Keychain, Windows Credential Manager or Linux Secret Service (GNOME Keyring, KWallet). The app only talks to the services you plug in.

Coucou on iPhone

The Mac app does the work; the iPhone app keeps you in the loop when you step away. It goes as far into the Apple ecosystem as a dev tool can:

<table> <tr> <td colspan="3" align="center"><img src="docs/media/iphone-live-activity.jpg" width="520" alt="Mochi on the Lock Screen, waiting for your OK with Deny and Allow"></td> </tr> <tr> <td width="33%"><img src="docs/media/iphone-approval.jpg" alt="A permission request on the iPhone, Allow with Face ID"></td> <td width="33%"><img src="docs/media/iphone-session.jpg" alt="A Claude Code session on the iPhone: the prompt, what it did, Claude's answer and the next instruction"></td> <td width="33%"><img src="docs/media/iphone-widgets.jpg" alt="Home Screen widgets with each agent's and service's Mochi"></td> </tr> </table>

• 🏝️ Live Activity and Dynamic Island — lock your Mac while an agent works and Mochi moves to your iPhone's Lock Screen and Dynamic Island with the agent's state, then comes back to the notch when you unlock. Allow or Deny a permission right from the Lock Screen, without opening the app.
• 🔔 Notifications you can act on — Allow, Review or Deny a permission, pick an answer to Claude's question, or reply to a finished agent, straight from the notification.
• 🔐 Face ID on every Allow — nothing runs on your Mac without your explicit tap; your Mac only applies a decision meant for the exact request it is waiting on.
• 💬 Talk to your agents — follow each session live (steps, diffs, the last turn), answer questions, and send the next instruction to your Mac by text or voice.
• 🧩 Widgets, Control Center, Siri and Shortcuts — home and Lock Screen widgets, a Control Center control, ask Siri how your agents are doing or send Claude an instruction, in Siri and Shortcuts.
• 🔎 Spotlight and Focus — find past turns in Spotlight; a Focus filter shows only the agents waiting for you.
• 📊 Your services up close — GitHub, Vercel, Stripe, Cal.com, n8n, Notion, Resend: your Mac reads their APIs with the keys in its Keychain and the iPhone shows the figures and lists. Safe actions (re-run CI, redeploy, merge a PR, pause a workflow) behind Face ID; nothing that moves money or sends an email.
• 🫧 Liquid Glass, native to the bone — SwiftUI, tabs, zoom transitions, context menus, swipe actions, alternate icons, Mochi at 120 Hz.
• 🔒 Through your own iCloud — sessions sync through your private CloudKit database; project names, commands and questions are encrypted with your iCloud keys. No Coucou server sees your projects, commands or keys. Turn it on in the Mac app: Settings → General → iPhone.

Get it on your iPhone in 3 steps: install Coucou on your iPhone (Join the TestFlight beta — free, App Store coming soon), turn on Settings → General → iPhone in the Mac app (0.1.9 or later), and use the same Apple Account in iCloud on both. Full guide, troubleshooting and build-it-yourself: docs/IPHONE.md.

<table> <tr> <td><img src="docs/media/claude-code.png" alt="Claude Code session"></td> <td><img src="docs/media/stripe.png" alt="Stripe payments"></td> </tr> <tr> <td><img src="docs/media/chat.png" alt="Chat with Claude"></td> <td><img src="docs/media/dizzy.png" alt="Too many hits"></td> </tr> </table>

Versions

macOS releases are published as v* tags. See CHANGELOG.md for the full notes of each version.

| Version | Date | Highlights | |---------|------|------------| | 0.2.3 | Oct 8, 2026 | Terminal sessions, Spotify, a colour per Mochi, dictation in any language, open on hover, your own sounds | | 0.2.2 | Oct 8, 2026 | Choose Mochi's screen, Claude Desktop pill, Codex plan usage, full questions, safer settings.json | | 0.2.1 | Oct 7, 2026 | Hermes Agent support | | 0.2.0 | Oct 6, 2026 | Copilot CLI, Muse Code, OpenCode and Amp, weekly recap, 10 languages | | 0.1.9 | Oct 6, 2026 | iPhone services with live details and actions, smarter Live Activity | | 0.1.8 | Oct 5, 2026 | Coucou on iPhone: sessions, widgets, approvals with Face ID, Mochi in the Dynamic Island | | 0.1.7 | Oct 4, 2026 | Keyboard shortcuts | | 0.1.6 | Oct 4, 2026