diff --git a/.gitignore b/.gitignore
index a20f983..d637da1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,19 @@
+# General
 .DS_Store
+
+# Development
 /.build
 /Packages
-/.claude
 *.xcodeproj
 xcuserdata/
 DerivedData/
 .swiftpm/configuration/registries.json
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
 .netrc
+
+# Claude Code
+/.claude
+.claude/
+**/CLAUDE.md
+!/CLAUDE.md
+
diff --git a/README.md b/README.md
index fab7654..fb4b020 100644
--- a/README.md
+++ b/README.md
@@ -7,10 +7,37 @@ A command-line tool for the [App Store Connect API](https://developer.apple.com/
 ## Requirements
 
 - macOS 13+
-- Swift 6.0+
+- Swift 6.0+ (only for building from source)
 
 ## Installation
 
+### Homebrew
+
+```bash
+brew tap keremerkan/tap
+brew install asc-client
+```
+
+The tap provides a pre-built binary for Apple Silicon Macs, so installation is instant.
+
+### Download the binary
+
+Download the latest release from [GitHub Releases](https://github.com/keremerkan/asc-client/releases):
+
+```bash
+curl -L https://github.com/keremerkan/asc-client/releases/latest/download/asc-client-macos-arm64.tar.gz -o asc-client.tar.gz
+tar xzf asc-client.tar.gz
+mv asc-client /usr/local/bin/
+```
+
+Since the binary is not signed or notarized, macOS will quarantine it on first download. Remove the quarantine attribute:
+
+```bash
+xattr -d com.apple.quarantine /usr/local/bin/asc-client
+```
+
+> **Note:** Pre-built binaries are provided for Apple Silicon (arm64) only. Intel Mac users should build from source.
+
 ### Build from source
 
 ```bash
@@ -21,30 +48,17 @@ strip .build/release/asc-client
 cp .build/release/asc-client /usr/local/bin/
 ```
 
-> **Note:** The release build takes a few minutes due to ~2500 generated API files. `strip` removes debug symbols, reducing the binary from ~175 MB to ~59 MB.
+> **Note:** The release build takes a few minutes because the [asc-swift](https://github.com/aaronsky/asc-swift) dependency includes ~2500 generated source files covering the entire App Store Connect API surface. `strip` removes debug symbols, reducing the binary from ~175 MB to ~59 MB.
 
 ### Shell completions
 
-Enable tab completion for subcommands, options, and flags:
+Set up tab completion for subcommands, options, and flags (supports zsh and bash):
 
-**zsh** (default on macOS):
 ```bash
-mkdir -p ~/.zfunc
-asc-client --generate-completion-script zsh > ~/.zfunc/_asc-client
+asc-client install-shell-completions
 ```
 
-Add this to your `~/.zshrc` if not already present:
-```bash
-fpath=(~/.zfunc $fpath)
-autoload -Uz compinit && compinit
-```
-
-**bash**:
-```bash
-asc-client --generate-completion-script bash > /usr/local/etc/bash_completion.d/asc-client
-```
-
-Restart your shell or open a new tab to activate.
+This detects your shell and configures everything automatically. Restart your shell or open a new tab to activate.
 
 ## Setup
 
diff --git a/Sources/asc-client/ASCClient.swift b/Sources/asc-client/ASCClient.swift
index 5d3e1f7..9dacb92 100644
--- a/Sources/asc-client/ASCClient.swift
+++ b/Sources/asc-client/ASCClient.swift
@@ -6,6 +6,11 @@ struct ASCClient: AsyncParsableCommand {
     commandName: "asc-client",
     abstract: "A command-line tool for the App Store Connect API.",
     version: "0.1.0",
-    subcommands: [ConfigureCommand.self, AppsCommand.self, BuildsCommand.self]
+    subcommands: [ConfigureCommand.self, AppsCommand.self, BuildsCommand.self, InstallCompletionsCommand.self]
   )
+
+  func run() async throws {
+    print("asc-client \(Self.configuration.version)")
+    print(Self.helpMessage())
+  }
 }
diff --git a/Sources/asc-client/Commands/InstallCompletionsCommand.swift b/Sources/asc-client/Commands/InstallCompletionsCommand.swift
new file mode 100644
index 0000000..5467b9f
--- /dev/null
+++ b/Sources/asc-client/Commands/InstallCompletionsCommand.swift
@@ -0,0 +1,138 @@
+import ArgumentParser
+import Foundation
+
+struct InstallCompletionsCommand: ParsableCommand {
+  static let configuration = CommandConfiguration(
+    commandName: "install-shell-completions",
+    abstract: "Install shell completions for asc-client."
+  )
+
+  func run() throws {
+    guard let shell = ProcessInfo.processInfo.environment["SHELL"] else {
+      throw ValidationError("Cannot detect shell. Set the SHELL environment variable.")
+    }
+
+    let home = FileManager.default.homeDirectoryForCurrentUser
+    let fm = FileManager.default
+
+    if shell.hasSuffix("/zsh") {
+      try installZsh(home: home, fm: fm)
+    } else if shell.hasSuffix("/bash") {
+      try installBash(home: home, fm: fm)
+    } else {
+      throw ValidationError(
+        "Only zsh and bash are supported. Detected: \(shell)")
+    }
+
+    print()
+    print("Done. Restart your shell or run: source ~/.\(shell.hasSuffix("/zsh") ? "zshrc" : "bashrc")")
+  }
+
+  private func installZsh(home: URL, fm: FileManager) throws {
+    // 1. Create ~/.zfunc if needed
+    let zfuncDir = home.appendingPathComponent(".zfunc")
+    if !fm.fileExists(atPath: zfuncDir.path) {
+      try fm.createDirectory(at: zfuncDir, withIntermediateDirectories: true)
+      print("Created \(zfuncDir.path)/")
+    } else {
+      print("\(zfuncDir.path)/ already exists.")
+    }
+
+    // 2. Write completion script
+    let completionScript = ASCClient.completionScript(for: .zsh)
+    let completionFile = zfuncDir.appendingPathComponent("_asc-client")
+    try completionScript.write(to: completionFile, atomically: true, encoding: .utf8)
+    print("Installed completion script to \(completionFile.path)")
+
+    // 3. Ensure ~/.zshrc_local has fpath and compinit
+    let zshrcLocal = home.appendingPathComponent(".zshrc_local")
+    var localContents = ""
+    if fm.fileExists(atPath: zshrcLocal.path) {
+      localContents = try String(contentsOf: zshrcLocal, encoding: .utf8)
+    }
+
+    let fpathLine = "fpath=(~/.zfunc $fpath)"
+    let compinitLine = "autoload -Uz compinit && compinit"
+    var localModified = false
+
+    if !localContents.contains(fpathLine) {
+      let block = "\n# asc-client completions\n\(fpathLine)\n\(compinitLine)\n"
+      localContents += block
+      localModified = true
+    } else if !localContents.contains(compinitLine) {
+      localContents = localContents.replacingOccurrences(
+        of: fpathLine, with: "\(fpathLine)\n\(compinitLine)")
+      localModified = true
+    }
+
+    if localModified {
+      try localContents.write(to: zshrcLocal, atomically: true, encoding: .utf8)
+      print("Updated \(zshrcLocal.path)")
+    } else {
+      print("\(zshrcLocal.path) already configured.")
+    }
+
+    // 4. Ensure ~/.zshrc sources ~/.zshrc_local
+    try ensureSourceLine(
+      rcFile: home.appendingPathComponent(".zshrc"),
+      sourceLine: "source ~/.zshrc_local",
+      fm: fm
+    )
+  }
+
+  private func installBash(home: URL, fm: FileManager) throws {
+    // 1. Create ~/.bash_completions if needed
+    let completionsDir = home.appendingPathComponent(".bash_completions")
+    if !fm.fileExists(atPath: completionsDir.path) {
+      try fm.createDirectory(at: completionsDir, withIntermediateDirectories: true)
+      print("Created \(completionsDir.path)/")
+    } else {
+      print("\(completionsDir.path)/ already exists.")
+    }
+
+    // 2. Write completion script
+    let completionScript = ASCClient.completionScript(for: .bash)
+    let completionFile = completionsDir.appendingPathComponent("asc-client.bash")
+    try completionScript.write(to: completionFile, atomically: true, encoding: .utf8)
+    print("Installed completion script to \(completionFile.path)")
+
+    // 3. Ensure ~/.bashrc_local sources the completion script
+    let bashrcLocal = home.appendingPathComponent(".bashrc_local")
+    var localContents = ""
+    if fm.fileExists(atPath: bashrcLocal.path) {
+      localContents = try String(contentsOf: bashrcLocal, encoding: .utf8)
+    }
+
+    let sourceLine = "source ~/.bash_completions/asc-client.bash"
+    if !localContents.contains(sourceLine) {
+      localContents += "\n# asc-client completions\n\(sourceLine)\n"
+      try localContents.write(to: bashrcLocal, atomically: true, encoding: .utf8)
+      print("Updated \(bashrcLocal.path)")
+    } else {
+      print("\(bashrcLocal.path) already configured.")
+    }
+
+    // 4. Ensure ~/.bashrc sources ~/.bashrc_local
+    try ensureSourceLine(
+      rcFile: home.appendingPathComponent(".bashrc"),
+      sourceLine: "[ -f ~/.bashrc_local ] && source ~/.bashrc_local",
+      fm: fm
+    )
+  }
+
+  private func ensureSourceLine(rcFile: URL, sourceLine: String, fm: FileManager) throws {
+    if fm.fileExists(atPath: rcFile.path) {
+      let contents = try String(contentsOf: rcFile, encoding: .utf8)
+      if !contents.contains(sourceLine) {
+        let newContents = sourceLine + "\n" + contents
+        try newContents.write(to: rcFile, atomically: true, encoding: .utf8)
+        print("Updated \(rcFile.path)")
+      } else {
+        print("\(rcFile.path) already configured.")
+      }
+    } else {
+      try (sourceLine + "\n").write(to: rcFile, atomically: true, encoding: .utf8)
+      print("Created \(rcFile.path)")
+    }
+  }
+}