diff --git a/README.md b/README.md
index cc2979d..2b40736 100644
--- a/README.md
+++ b/README.md
@@ -14,14 +14,14 @@ Learn more about the platform in the [AssemblyAI docs](https://www.assemblyai.co
 
 ## ⚡ Quickstart
 
-Install on macOS or Linux with Homebrew:
+Install on macOS or Linux with one command:
 
 ```sh
-brew tap assemblyai/cli https://github.com/AssemblyAI/cli
-brew trust assemblyai/cli   # only needed when HOMEBREW_REQUIRE_TAP_TRUST is set; harmless otherwise
-brew install assembly
+curl -LsSf https://raw.githubusercontent.com/AssemblyAI/cli/main/install.sh | sh
 ```
 
+This installs [uv](https://docs.astral.sh/uv/) if needed, then installs `assembly` as a uv tool.
+
 Sign in (stores your API key in the OS keyring) and run your first transcription:
 
 ```sh
@@ -29,7 +29,7 @@ assembly login
 assembly transcribe --sample
 ```
 
-That's it. Run `assembly onboard` for a guided tour, or see [Installation](#-installation) for pipx/uv and other options.
+That's it. Run `assembly onboard` for a guided tour, or see [Installation](#-installation) for Homebrew, pipx, and other options.
 
 ## 🚀 Why the AssemblyAI CLI?
 
@@ -218,7 +218,17 @@ Requires Python 3.12+ (Homebrew brings its own; for pipx/uv see the `--python` h
 > The `assemblyai-cli` package on PyPI is **not** this project — install with one of the
 > commands below, not `pip install assemblyai-cli`.
 
-### Homebrew (recommended — macOS / Linux)
+### Install script (recommended — macOS / Linux)
+
+```sh
+curl -LsSf https://raw.githubusercontent.com/AssemblyAI/cli/main/install.sh | sh
+```
+
+The [`install.sh`](install.sh) script bootstraps [uv](https://docs.astral.sh/uv/) if it
+isn't already present, then runs `uv tool install` to put `assembly` on your `PATH`. Re-run
+it any time to update to the latest version.
+
+### Homebrew (macOS / Linux)
 
 ```sh
 brew tap assemblyai/cli https://github.com/AssemblyAI/cli
@@ -243,12 +253,14 @@ If your default interpreter is older than Python 3.12, add `--python python3.12`
 <summary>System dependencies for the live-audio commands (pipx/uv installs only)</summary>
 
 Only the live-audio commands need anything extra: `stream`, `dictate`, and `agent` use PortAudio for
-microphone capture and [`ffmpeg`](https://ffmpeg.org) on `PATH` to stream non-WAV audio.
-Plain `transcribe` uploads your file directly and needs neither.
+microphone capture and [`ffmpeg`](https://ffmpeg.org) on `PATH` to stream non-WAV audio; `assembly share`
+uses [`cloudflared`](https://github.com/cloudflare/cloudflared) for its public tunnel.
+Plain `transcribe` uploads your file directly and needs none of them. The
+[`install.sh`](install.sh) script checks for these and prints the right install command when any are missing.
 
 - Debian/Ubuntu: `sudo apt-get install libportaudio2 ffmpeg`
 - Fedora: `sudo dnf install portaudio ffmpeg`
-- macOS (Homebrew): `brew install portaudio ffmpeg`
+- macOS (Homebrew): `brew install portaudio ffmpeg cloudflared`
 
 </details>
 
diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..c884e24
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,120 @@
+#!/bin/bash
+
+set -e # Exit on any error
+
+# Canonical installer for the AssemblyAI CLI (`assembly`).
+# Installs the app as a uv tool, bootstrapping uv first if it is missing.
+
+PACKAGE="git+https://github.com/AssemblyAI/cli.git"
+PYTHON_VERSION="3.13"
+
+# Best-effort check for the PortAudio shared library (no `command` to probe, so
+# look via pkg-config, the dynamic linker cache, then well-known lib paths).
+has_portaudio() {
+	if command -v pkg-config >/dev/null 2>&1 && pkg-config --exists portaudio-2.0 2>/dev/null; then
+		return 0
+	fi
+	local f
+	case "$(uname -s)" in
+	Darwin)
+		for f in /opt/homebrew/lib/libportaudio*.dylib /usr/local/lib/libportaudio*.dylib; do
+			[ -e "$f" ] && return 0
+		done
+		;;
+	Linux)
+		if command -v ldconfig >/dev/null 2>&1 && ldconfig -p 2>/dev/null | grep -q libportaudio; then
+			return 0
+		fi
+		for f in /usr/lib/libportaudio.so* /usr/lib/*/libportaudio.so*; do
+			[ -e "$f" ] && return 0
+		done
+		;;
+	esac
+	return 1
+}
+
+# Homebrew also pulls in ffmpeg, portaudio, and cloudflared. The uv install does
+# not, so detect any that are missing and print how to install them — without
+# touching the system or invoking sudo on the user's behalf.
+advise_system_deps() {
+	local missing=()
+	command -v ffmpeg >/dev/null 2>&1 || missing+=("ffmpeg")
+	has_portaudio || missing+=("portaudio")
+	command -v cloudflared >/dev/null 2>&1 || missing+=("cloudflared")
+
+	[ ${#missing[@]} -eq 0 ] && return 0
+
+	echo ""
+	echo "Optional system dependencies are missing: ${missing[*]}"
+	echo "(core 'assembly transcribe' works without them)"
+	echo "  - ffmpeg:      decode non-WAV / URL audio"
+	echo "  - portaudio:   microphone capture for stream / dictate / agent"
+	echo "  - cloudflared: public tunnel for 'assembly share'"
+	echo ""
+	echo "Install them with:"
+
+	# Split into packages a system package manager carries vs. cloudflared,
+	# which needs Cloudflare's own repo on Linux.
+	local pkgs=()
+	local need_cloudflared=0
+	local dep
+	for dep in "${missing[@]}"; do
+		case "$dep" in
+		cloudflared) need_cloudflared=1 ;;
+		*) pkgs+=("$dep") ;;
+		esac
+	done
+
+	case "$(uname -s)" in
+	Darwin)
+		echo "  brew install ${missing[*]}"
+		;;
+	Linux)
+		if command -v apt-get >/dev/null 2>&1; then
+			# PortAudio's runtime lib is libportaudio2 on Debian/Ubuntu.
+			local apt_pkgs=("${pkgs[@]/portaudio/libportaudio2}")
+			[ ${#apt_pkgs[@]} -gt 0 ] && echo "  sudo apt-get install ${apt_pkgs[*]}"
+		elif command -v dnf >/dev/null 2>&1; then
+			[ ${#pkgs[@]} -gt 0 ] && echo "  sudo dnf install ${pkgs[*]}"
+		else
+			[ ${#pkgs[@]} -gt 0 ] && echo "  install with your package manager: ${pkgs[*]}"
+		fi
+		if [ "$need_cloudflared" -eq 1 ]; then
+			echo "  cloudflared: see https://pkg.cloudflare.com or"
+			echo "    https://github.com/cloudflare/cloudflared/releases"
+		fi
+		;;
+	*)
+		echo "  ${missing[*]}"
+		;;
+	esac
+}
+
+if ! command -v uv &>/dev/null; then
+	echo "uv is not installed. Installing..."
+	curl -LsSf https://astral.sh/uv/install.sh | sh
+	echo "uv installation complete!"
+	echo ""
+
+	if [ -x "$HOME/.local/bin/uv" ]; then
+		"$HOME/.local/bin/uv" tool install -U "$PACKAGE" --python "$PYTHON_VERSION"
+	else
+		echo "Please restart your shell and run this script again"
+		echo ""
+		exit 0
+	fi
+else
+	uv self update
+	uv tool install -U "$PACKAGE" --python "$PYTHON_VERSION"
+fi
+
+advise_system_deps || true
+
+echo ""
+echo "For help and support, see the AssemblyAI CLI repository"
+echo "https://github.com/AssemblyAI/cli"
+echo ""
+echo "Read the docs at https://www.assemblyai.com/docs"
+echo ""
+echo "The AssemblyAI CLI is installed!"
+echo "Run 'assembly login' to sign in, then 'assembly transcribe --sample' to try it"