diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..aff600f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,54 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build-and-test:
+    runs-on: macos-latest
+    defaults:
+      run:
+        shell: bash
+        working-directory: swabble
+    steps:
+      - name: Checkout swabble
+        uses: actions/checkout@v4
+        with:
+          path: swabble
+
+      - name: Select Xcode 26.1 (prefer 26.1.1)
+        run: |
+          set -euo pipefail
+          # pick the newest installed 26.1.x, fallback to newest 26.x
+          CANDIDATE="$(ls -d /Applications/Xcode_26.1*.app 2>/dev/null | sort -V | tail -1 || true)"
+          if [[ -z "$CANDIDATE" ]]; then
+            CANDIDATE="$(ls -d /Applications/Xcode_26*.app 2>/dev/null | sort -V | tail -1 || true)"
+          fi
+          if [[ -z "$CANDIDATE" ]]; then
+            echo "No Xcode 26.x found on runner" >&2
+            exit 1
+          fi
+          echo "Selecting $CANDIDATE"
+          sudo xcode-select -s "$CANDIDATE"
+          xcodebuild -version
+
+      - name: Show Swift version
+        run: swift --version
+
+      - name: Install tooling
+        run: |
+          brew update
+          brew install swiftlint swiftformat
+
+      - name: Format check
+        run: |
+          ./scripts/format.sh
+          git diff --exit-code
+
+      - name: Lint
+        run: ./scripts/lint.sh
+
+      - name: Test
+        run: swift test --parallel
diff --git a/Package.resolved b/Package.resolved
index 80f7240..a7d2a70 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,6 +1,15 @@
 {
-  "originHash" : "b658624653b4e0bfcd81b3b9820842c95489a766037392e1cedb2d677c61fb3f",
+  "originHash" : "3018b2c8c183d55b57ad0c4526b2380ac3b957d13a3a86e1b2845e81323c443a",
   "pins" : [
+    {
+      "identity" : "commander",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/steipete/Commander.git",
+      "state" : {
+        "revision" : "8b8cb4f34315ce9e5307b3a2bcd77ff73f586a02",
+        "version" : "0.2.0"
+      }
+    },
     {
       "identity" : "swift-syntax",
       "kind" : "remoteSourceControl",
diff --git a/Package.swift b/Package.swift
index d30786e..588bd01 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,21 +6,30 @@ let package = Package(
     platforms: [
         .macOS(.v26),
     ],
+    products: [
+        .library(name: "Swabble", targets: ["Swabble"]),
+        .executable(name: "swabble", targets: ["SwabbleCLI"]),
+    ],
     dependencies: [
-        .package(path: "../Peekaboo/Commander"),
+        .package(url: "https://github.com/steipete/Commander.git", from: "0.2.0"),
         .package(url: "https://github.com/apple/swift-testing", from: "0.99.0"),
     ],
     targets: [
+        .target(
+            name: "Swabble",
+            path: "Sources/SwabbleCore",
+            swiftSettings: []),
         .executableTarget(
-            name: "swabble",
+            name: "SwabbleCLI",
             dependencies: [
+                "Swabble",
                 .product(name: "Commander", package: "Commander"),
             ],
-            path: "Sources"),
+            path: "Sources/swabble"),
         .testTarget(
             name: "swabbleTests",
             dependencies: [
-                "swabble",
+                "Swabble",
                 .product(name: "Testing", package: "swift-testing"),
             ]),
     ],
diff --git a/README.md b/README.md
index 29a3668..8c8169c 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,19 @@ swift run swabble test-hook "hello world"
 swift run swabble transcribe /path/to/audio.m4a --format srt --output out.srt
 ```
 
+## Use as a library
+Add swabble as a SwiftPM dependency and import the `Swabble` product to reuse the Speech pipeline, config loader, hook runner, and transcript store in your own app:
+
+```swift
+// Package.swift
+dependencies: [
+    .package(url: "https://github.com/steipete/swabble.git", branch: "main"),
+],
+targets: [
+    .target(name: "MyApp", dependencies: [.product(name: "Swabble", package: "swabble")]),
+]
+```
+
 ## CLI
 - `serve` — foreground loop (mic → wake → hook)
 - `transcribe <file>` — offline transcription (txt|srt)
diff --git a/Sources/SwabbleCore/Config/Config.swift b/Sources/SwabbleCore/Config/Config.swift
new file mode 100644
index 0000000..4dc9d46
--- /dev/null
+++ b/Sources/SwabbleCore/Config/Config.swift
@@ -0,0 +1,77 @@
+import Foundation
+
+public struct SwabbleConfig: Codable, Sendable {
+    public struct Audio: Codable, Sendable {
+        public var deviceName: String = ""
+        public var deviceIndex: Int = -1
+        public var sampleRate: Double = 16000
+        public var channels: Int = 1
+    }
+
+    public struct Wake: Codable, Sendable {
+        public var enabled: Bool = true
+        public var word: String = "clawd"
+        public var aliases: [String] = ["claude"]
+    }
+
+    public struct Hook: Codable, Sendable {
+        public var command: String = ""
+        public var args: [String] = []
+        public var prefix: String = "Voice swabble from ${hostname}: "
+        public var cooldownSeconds: Double = 1
+        public var minCharacters: Int = 24
+        public var timeoutSeconds: Double = 5
+        public var env: [String: String] = [:]
+    }
+
+    public struct Logging: Codable, Sendable {
+        public var level: String = "info"
+        public var format: String = "text" // text|json placeholder
+    }
+
+    public struct Transcripts: Codable, Sendable {
+        public var enabled: Bool = true
+        public var maxEntries: Int = 50
+    }
+
+    public struct Speech: Codable, Sendable {
+        public var localeIdentifier: String = Locale.current.identifier
+        public var etiquetteReplacements: Bool = false
+    }
+
+    public var audio = Audio()
+    public var wake = Wake()
+    public var hook = Hook()
+    public var logging = Logging()
+    public var transcripts = Transcripts()
+    public var speech = Speech()
+
+    public static let defaultPath = FileManager.default
+        .homeDirectoryForCurrentUser
+        .appendingPathComponent(".config/swabble/config.json")
+
+    public init() {}
+}
+
+public enum ConfigError: Error {
+    case missingConfig
+}
+
+public enum ConfigLoader {
+    public static func load(at path: URL?) throws -> SwabbleConfig {
+        let url = path ?? SwabbleConfig.defaultPath
+        if !FileManager.default.fileExists(atPath: url.path) {
+            throw ConfigError.missingConfig
+        }
+        let data = try Data(contentsOf: url)
+        return try JSONDecoder().decode(SwabbleConfig.self, from: data)
+    }
+
+    public static func save(_ config: SwabbleConfig, at path: URL?) throws {
+        let url = path ?? SwabbleConfig.defaultPath
+        let dir = url.deletingLastPathComponent()
+        try FileManager.default.createDirectory(at: dir, withIntermediateDirectories: true)
+        let data = try JSONEncoder().encode(config)
+        try data.write(to: url)
+    }
+}
diff --git a/Sources/swabble/Hooks/HookRunner.swift b/Sources/SwabbleCore/Hooks/HookRunner.swift
similarity index 55%
rename from Sources/swabble/Hooks/HookRunner.swift
rename to Sources/SwabbleCore/Hooks/HookRunner.swift
index b227a19..e94b0b0 100644
--- a/Sources/swabble/Hooks/HookRunner.swift
+++ b/Sources/SwabbleCore/Hooks/HookRunner.swift
@@ -1,43 +1,53 @@
 import Foundation
 
-struct HookJob: Sendable {
-    let text: String
-    let timestamp: Date
+public struct HookJob: Sendable {
+    public let text: String
+    public let timestamp: Date
+
+    public init(text: String, timestamp: Date) {
+        self.text = text
+        self.timestamp = timestamp
+    }
 }
 
-actor HookRunner {
+public actor HookRunner {
     private let config: SwabbleConfig
     private var lastRun: Date?
     private let hostname: String
 
-    init(config: SwabbleConfig) {
+    public init(config: SwabbleConfig) {
         self.config = config
         self.hostname = Host.current().localizedName ?? "host"
     }
 
-    func shouldRun() -> Bool {
-        guard config.hook.cooldownSeconds > 0 else { return true }
+    public func shouldRun() -> Bool {
+        guard self.config.hook.cooldownSeconds > 0 else { return true }
         if let lastRun, Date().timeIntervalSince(lastRun) < config.hook.cooldownSeconds {
             return false
         }
         return true
     }
 
-    func run(job: HookJob) async throws {
-        guard shouldRun() else { return }
-        guard !config.hook.command.isEmpty else { throw NSError(domain: "Hook", code: 1, userInfo: [NSLocalizedDescriptionKey: "hook command not set"]) }
+    public func run(job: HookJob) async throws {
+        guard self.shouldRun() else { return }
+        guard !self.config.hook.command.isEmpty else { throw NSError(
+            domain: "Hook",
+            code: 1,
+            userInfo: [NSLocalizedDescriptionKey: "hook command not set"]) }
 
-        let prefix = config.hook.prefix.replacingOccurrences(of: "${hostname}", with: hostname)
+        let prefix = self.config.hook.prefix.replacingOccurrences(of: "${hostname}", with: self.hostname)
         let payload = prefix + job.text
 
         let process = Process()
-        process.executableURL = URL(fileURLWithPath: config.hook.command)
-        process.arguments = config.hook.args + [payload]
+        process.executableURL = URL(fileURLWithPath: self.config.hook.command)
+        process.arguments = self.config.hook.args + [payload]
 
         var env = ProcessInfo.processInfo.environment
         env["SWABBLE_TEXT"] = job.text
         env["SWABBLE_PREFIX"] = prefix
-        for (k, v) in config.hook.env { env[k] = v }
+        for (k, v) in self.config.hook.env {
+            env[k] = v
+        }
         process.environment = env
 
         let pipe = Pipe()
@@ -60,6 +70,6 @@ actor HookRunner {
             try await group.next()
             group.cancelAll()
         }
-        lastRun = Date()
+        self.lastRun = Date()
     }
 }
diff --git a/Sources/swabble/Speech/BufferConverter.swift b/Sources/SwabbleCore/Speech/BufferConverter.swift
similarity index 96%
rename from Sources/swabble/Speech/BufferConverter.swift
rename to Sources/SwabbleCore/Speech/BufferConverter.swift
index 15adc50..e6d7dc9 100644
--- a/Sources/swabble/Speech/BufferConverter.swift
+++ b/Sources/SwabbleCore/Speech/BufferConverter.swift
@@ -25,7 +25,8 @@ final class BufferConverter {
         let sampleRateRatio = converter.outputFormat.sampleRate / converter.inputFormat.sampleRate
         let scaledInputFrameLength = Double(buffer.frameLength) * sampleRateRatio
         let frameCapacity = AVAudioFrameCount(scaledInputFrameLength.rounded(.up))
-        guard let conversionBuffer = AVAudioPCMBuffer(pcmFormat: converter.outputFormat, frameCapacity: frameCapacity) else {
+        guard let conversionBuffer = AVAudioPCMBuffer(pcmFormat: converter.outputFormat, frameCapacity: frameCapacity)
+        else {
             throw ConverterError.failedToCreateConversionBuffer
         }
 
diff --git a/Sources/swabble/Speech/SpeechPipeline.swift b/Sources/SwabbleCore/Speech/SpeechPipeline.swift
similarity index 76%
rename from Sources/swabble/Speech/SpeechPipeline.swift
rename to Sources/SwabbleCore/Speech/SpeechPipeline.swift
index 9bec525..faecc64 100644
--- a/Sources/swabble/Speech/SpeechPipeline.swift
+++ b/Sources/SwabbleCore/Speech/SpeechPipeline.swift
@@ -2,19 +2,19 @@ import AVFoundation
 import Foundation
 import Speech
 
-struct SpeechSegment: Sendable {
-    let text: String
-    let isFinal: Bool
+public struct SpeechSegment: Sendable {
+    public let text: String
+    public let isFinal: Bool
 }
 
-enum SpeechPipelineError: Error {
+public enum SpeechPipelineError: Error {
     case authorizationDenied
     case analyzerFormatUnavailable
     case transcriberUnavailable
 }
 
 /// Live microphone → SpeechAnalyzer → SpeechTranscriber pipeline.
-actor SpeechPipeline {
+public actor SpeechPipeline {
     private struct UnsafeBuffer: @unchecked Sendable { let buffer: AVAudioPCMBuffer }
 
     private var engine = AVAudioEngine()
@@ -24,7 +24,9 @@ actor SpeechPipeline {
     private var resultTask: Task<Void, Never>?
     private let converter = BufferConverter()
 
-    func start(localeIdentifier: String, etiquette: Bool) async throws -> AsyncStream<SpeechSegment> {
+    public init() {}
+
+    public func start(localeIdentifier: String, etiquette: Bool) async throws -> AsyncStream<SpeechSegment> {
         let auth = await requestAuthorizationIfNeeded()
         guard auth == .authorized else { throw SpeechPipelineError.authorizationDenied }
 
@@ -35,15 +37,16 @@ actor SpeechPipeline {
             attributeOptions: [])
         self.transcriber = transcriberModule
 
-        guard let analyzerFormat = await SpeechAnalyzer.bestAvailableAudioFormat(compatibleWith: [transcriberModule]) else {
+        guard let analyzerFormat = await SpeechAnalyzer.bestAvailableAudioFormat(compatibleWith: [transcriberModule])
+        else {
             throw SpeechPipelineError.analyzerFormatUnavailable
         }
 
-        analyzer = SpeechAnalyzer(modules: [transcriberModule])
+        self.analyzer = SpeechAnalyzer(modules: [transcriberModule])
         let (stream, continuation) = AsyncStream<AnalyzerInput>.makeStream()
-        inputContinuation = continuation
+        self.inputContinuation = continuation
 
-        let inputNode = engine.inputNode
+        let inputNode = self.engine.inputNode
         let inputFormat = inputNode.outputFormat(forBus: 0)
         inputNode.removeTap(onBus: 0)
         inputNode.installTap(onBus: 0, bufferSize: 2048, format: inputFormat) { [weak self] buffer, _ in
@@ -52,16 +55,16 @@ actor SpeechPipeline {
             Task { await self.handleBuffer(boxed.buffer, targetFormat: analyzerFormat) }
         }
 
-        engine.prepare()
-        try engine.start()
-        try await analyzer?.start(inputSequence: stream)
+        self.engine.prepare()
+        try self.engine.start()
+        try await self.analyzer?.start(inputSequence: stream)
 
         guard let transcriberForStream = self.transcriber else {
             throw SpeechPipelineError.transcriberUnavailable
         }
 
         return AsyncStream { continuation in
-            resultTask = Task {
+            self.resultTask = Task {
                 do {
                     for try await result in transcriberForStream.results {
                         let seg = SpeechSegment(text: String(result.text.characters), isFinal: result.isFinal)
@@ -78,19 +81,19 @@ actor SpeechPipeline {
         }
     }
 
-    func stop() async {
-        resultTask?.cancel()
-        inputContinuation?.finish()
-        engine.inputNode.removeTap(onBus: 0)
-        engine.stop()
-        try? await analyzer?.finalizeAndFinishThroughEndOfInput()
+    public func stop() async {
+        self.resultTask?.cancel()
+        self.inputContinuation?.finish()
+        self.engine.inputNode.removeTap(onBus: 0)
+        self.engine.stop()
+        try? await self.analyzer?.finalizeAndFinishThroughEndOfInput()
     }
 
     private func handleBuffer(_ buffer: AVAudioPCMBuffer, targetFormat: AVAudioFormat) async {
         do {
             let converted = try converter.convert(buffer, to: targetFormat)
             let input = AnalyzerInput(buffer: converted)
-            inputContinuation?.yield(input)
+            self.inputContinuation?.yield(input)
         } catch {
             // drop on conversion failure
         }
diff --git a/Sources/swabble/Support/AttributedString+Sentences.swift b/Sources/SwabbleCore/Support/AttributedString+Sentences.swift
similarity index 95%
rename from Sources/swabble/Support/AttributedString+Sentences.swift
rename to Sources/SwabbleCore/Support/AttributedString+Sentences.swift
index e5e434b..8f5d6a1 100644
--- a/Sources/swabble/Support/AttributedString+Sentences.swift
+++ b/Sources/SwabbleCore/Support/AttributedString+Sentences.swift
@@ -3,7 +3,7 @@ import Foundation
 import NaturalLanguage
 
 extension AttributedString {
-    func sentences(maxLength: Int? = nil) -> [AttributedString] {
+    public func sentences(maxLength: Int? = nil) -> [AttributedString] {
         let tokenizer = NLTokenizer(unit: .sentence)
         let string = String(characters)
         tokenizer.string = string
@@ -12,8 +12,7 @@ extension AttributedString {
                 $0,
                 AttributedString.Index($0.lowerBound, within: self)!
                     ..<
-                    AttributedString.Index($0.upperBound, within: self)!
-            )
+                    AttributedString.Index($0.upperBound, within: self)!)
         }
         let ranges = sentenceRanges.flatMap { sentenceStringRange, sentenceRange in
             let sentence = self[sentenceRange]
@@ -57,8 +56,7 @@ extension AttributedString {
             var attributes = AttributeContainer()
             attributes[AttributeScopes.SpeechAttributes.TimeRangeAttribute.self] = CMTimeRange(
                 start: start,
-                end: end
-            )
+                end: end)
             return AttributedString(self[range].characters, attributes: attributes)
         }
     }
diff --git a/Sources/SwabbleCore/Support/Logging.swift b/Sources/SwabbleCore/Support/Logging.swift
new file mode 100644
index 0000000..695567a
--- /dev/null
+++ b/Sources/SwabbleCore/Support/Logging.swift
@@ -0,0 +1,41 @@
+import Foundation
+
+public enum LogLevel: String, Comparable, CaseIterable, Sendable {
+    case trace, debug, info, warn, error
+
+    var rank: Int {
+        switch self {
+        case .trace: 0
+        case .debug: 1
+        case .info: 2
+        case .warn: 3
+        case .error: 4
+        }
+    }
+
+    public static func < (lhs: LogLevel, rhs: LogLevel) -> Bool { lhs.rank < rhs.rank }
+}
+
+public struct Logger: Sendable {
+    public let level: LogLevel
+
+    public init(level: LogLevel) { self.level = level }
+
+    public func log(_ level: LogLevel, _ message: String) {
+        guard level >= self.level else { return }
+        let ts = ISO8601DateFormatter().string(from: Date())
+        print("[\(level.rawValue.uppercased())] \(ts) | \(message)")
+    }
+
+    public func trace(_ msg: String) { self.log(.trace, msg) }
+    public func debug(_ msg: String) { self.log(.debug, msg) }
+    public func info(_ msg: String) { self.log(.info, msg) }
+    public func warn(_ msg: String) { self.log(.warn, msg) }
+    public func error(_ msg: String) { self.log(.error, msg) }
+}
+
+extension LogLevel {
+    public init?(configValue: String) {
+        self.init(rawValue: configValue.lowercased())
+    }
+}
diff --git a/Sources/swabble/Support/OutputFormat.swift b/Sources/SwabbleCore/Support/OutputFormat.swift
similarity index 82%
rename from Sources/swabble/Support/OutputFormat.swift
rename to Sources/SwabbleCore/Support/OutputFormat.swift
index 44ef691..84047c7 100644
--- a/Sources/swabble/Support/OutputFormat.swift
+++ b/Sources/SwabbleCore/Support/OutputFormat.swift
@@ -1,18 +1,18 @@
 import CoreMedia
 import Foundation
 
-enum OutputFormat: String {
+public enum OutputFormat: String {
     case txt
     case srt
 
-    var needsAudioTimeRange: Bool {
+    public var needsAudioTimeRange: Bool {
         switch self {
         case .srt: true
         default: false
         }
     }
 
-    func text(for transcript: AttributedString, maxLength: Int) -> String {
+    public func text(for transcript: AttributedString, maxLength: Int) -> String {
         switch self {
         case .txt:
             return String(transcript.characters)
@@ -25,7 +25,9 @@ enum OutputFormat: String {
                 return String(format: "%0.2d:%0.2d:%0.2d,%0.3d", h, m, s, ms)
             }
 
-            return transcript.sentences(maxLength: maxLength).compactMap { (sentence: AttributedString) -> (CMTimeRange, String)? in
+            return transcript.sentences(maxLength: maxLength).compactMap { (sentence: AttributedString) -> (
+                CMTimeRange,
+                String)? in
                 guard let timeRange = sentence.audioTimeRange else { return nil }
                 return (timeRange, String(sentence.characters))
             }.enumerated().map { index, run in
diff --git a/Sources/swabble/Support/TranscriptsStore.swift b/Sources/SwabbleCore/Support/TranscriptsStore.swift
similarity index 55%
rename from Sources/swabble/Support/TranscriptsStore.swift
rename to Sources/SwabbleCore/Support/TranscriptsStore.swift
index 2c0fe93..a62eb5b 100644
--- a/Sources/swabble/Support/TranscriptsStore.swift
+++ b/Sources/SwabbleCore/Support/TranscriptsStore.swift
@@ -1,40 +1,38 @@
 import Foundation
 
-actor TranscriptsStore {
-    static let shared = TranscriptsStore()
+public actor TranscriptsStore {
+    public static let shared = TranscriptsStore()
 
     private var entries: [String] = []
     private let limit = 100
     private let fileURL: URL
 
-    init() {
+    public init() {
         let dir = FileManager.default.homeDirectoryForCurrentUser
             .appendingPathComponent("Library/Application Support/swabble", isDirectory: true)
         try? FileManager.default.createDirectory(at: dir, withIntermediateDirectories: true)
-        fileURL = dir.appendingPathComponent("transcripts.log")
+        self.fileURL = dir.appendingPathComponent("transcripts.log")
         if let data = try? Data(contentsOf: fileURL),
            let text = String(data: data, encoding: .utf8)
         {
-            entries = text.split(separator: "\n").map(String.init).suffix(limit)
+            self.entries = text.split(separator: "\n").map(String.init).suffix(self.limit)
         }
     }
 
-    func append(text: String) {
-        entries.append(text)
-        if entries.count > limit {
-            entries.removeFirst(entries.count - limit)
+    public func append(text: String) {
+        self.entries.append(text)
+        if self.entries.count > self.limit {
+            self.entries.removeFirst(self.entries.count - self.limit)
         }
-        let body = entries.joined(separator: "\n")
-        try? body.write(to: fileURL, atomically: false, encoding: .utf8)
+        let body = self.entries.joined(separator: "\n")
+        try? body.write(to: self.fileURL, atomically: false, encoding: .utf8)
     }
 
-    func latest() -> [String] {
-        entries
-    }
+    public func latest() -> [String] { self.entries }
 }
 
-private extension String {
-    func appendLine(to url: URL) throws {
+extension String {
+    private func appendLine(to url: URL) throws {
         let data = (self + "\n").data(using: .utf8) ?? Data()
         if FileManager.default.fileExists(atPath: url.path) {
             let handle = try FileHandle(forWritingTo: url)
diff --git a/Sources/swabble/Commands/DoctorCommand.swift b/Sources/swabble/Commands/DoctorCommand.swift
index fd28034..fc37e36 100644
--- a/Sources/swabble/Commands/DoctorCommand.swift
+++ b/Sources/swabble/Commands/DoctorCommand.swift
@@ -1,6 +1,7 @@
 import Commander
 import Foundation
 import Speech
+import Swabble
 
 @MainActor
 struct DoctorCommand: ParsableCommand {
@@ -13,14 +14,14 @@ struct DoctorCommand: ParsableCommand {
     init() {}
     init(parsed: ParsedValues) {
         self.init()
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
         let auth = await SFSpeechRecognizer.authorizationStatus()
         print("Speech auth: \(auth)")
         do {
-            _ = try ConfigLoader.load(at: configURL)
+            _ = try ConfigLoader.load(at: self.configURL)
             print("Config: OK")
         } catch {
             print("Config missing or invalid; run setup")
@@ -32,5 +33,5 @@ struct DoctorCommand: ParsableCommand {
         print("Mics found: \(session.devices.count)")
     }
 
-    private var configURL: URL? { configPath.map { URL(fileURLWithPath: $0) } }
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
 }
diff --git a/Sources/swabble/Commands/MicCommands.swift b/Sources/swabble/Commands/MicCommands.swift
index 0d158c8..3c31f74 100644
--- a/Sources/swabble/Commands/MicCommands.swift
+++ b/Sources/swabble/Commands/MicCommands.swift
@@ -1,6 +1,7 @@
 import AVFoundation
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct MicCommand: ParsableCommand {
@@ -46,16 +47,16 @@ struct MicSet: ParsableCommand {
     init() {}
     init(parsed: ParsedValues) {
         self.init()
-        if let value = parsed.positional.first, let intVal = Int(value) { index = intVal }
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if let value = parsed.positional.first, let intVal = Int(value) { self.index = intVal }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
-        var cfg = try ConfigLoader.load(at: configURL)
-        cfg.audio.deviceIndex = index
-        try ConfigLoader.save(cfg, at: configURL)
-        print("saved device index \(index)")
+        var cfg = try ConfigLoader.load(at: self.configURL)
+        cfg.audio.deviceIndex = self.index
+        try ConfigLoader.save(cfg, at: self.configURL)
+        print("saved device index \(self.index)")
     }
 
-    private var configURL: URL? { configPath.map { URL(fileURLWithPath: $0) } }
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
 }
diff --git a/Sources/swabble/Commands/ServeCommand.swift b/Sources/swabble/Commands/ServeCommand.swift
index 279dbb4..1493402 100644
--- a/Sources/swabble/Commands/ServeCommand.swift
+++ b/Sources/swabble/Commands/ServeCommand.swift
@@ -1,5 +1,6 @@
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct ServeCommand: ParsableCommand {
@@ -16,19 +17,19 @@ struct ServeCommand: ParsableCommand {
 
     init(parsed: ParsedValues) {
         self.init()
-        if parsed.flags.contains("noWake") { noWake = true }
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if parsed.flags.contains("noWake") { self.noWake = true }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
         var cfg: SwabbleConfig
         do {
-            cfg = try ConfigLoader.load(at: configURL)
+            cfg = try ConfigLoader.load(at: self.configURL)
         } catch {
             cfg = SwabbleConfig()
-            try ConfigLoader.save(cfg, at: configURL)
+            try ConfigLoader.save(cfg, at: self.configURL)
         }
-        if noWake {
+        if self.noWake {
             cfg.wake.enabled = false
         }
 
@@ -36,7 +37,9 @@ struct ServeCommand: ParsableCommand {
         logger.info("swabble serve starting (wake: \(cfg.wake.enabled ? cfg.wake.word : "disabled"))")
         let pipeline = SpeechPipeline()
         do {
-            let stream = try await pipeline.start(localeIdentifier: cfg.speech.localeIdentifier, etiquette: cfg.speech.etiquetteReplacements)
+            let stream = try await pipeline.start(
+                localeIdentifier: cfg.speech.localeIdentifier,
+                etiquette: cfg.speech.etiquetteReplacements)
             for await seg in stream {
                 if cfg.wake.enabled {
                     guard Self.matchesWake(text: seg.text, cfg: cfg) else { continue }
@@ -61,7 +64,7 @@ struct ServeCommand: ParsableCommand {
     }
 
     private var configURL: URL? {
-        configPath.map { URL(fileURLWithPath: $0) }
+        self.configPath.map { URL(fileURLWithPath: $0) }
     }
 
     private static func matchesWake(text: String, cfg: SwabbleConfig) -> Bool {
diff --git a/Sources/swabble/Commands/ServiceCommands.swift b/Sources/swabble/Commands/ServiceCommands.swift
index 3a8f31c..70b7213 100644
--- a/Sources/swabble/Commands/ServiceCommands.swift
+++ b/Sources/swabble/Commands/ServiceCommands.swift
@@ -28,11 +28,11 @@ private enum LaunchdHelper {
             "KeepAlive": true,
         ]
         let data = try PropertyListSerialization.data(fromPropertyList: plist, format: .xml, options: 0)
-        try data.write(to: plistURL)
+        try data.write(to: self.plistURL)
     }
 
     static func removePlist() throws {
-        try? FileManager.default.removeItem(at: plistURL)
+        try? FileManager.default.removeItem(at: self.plistURL)
     }
 }
 
diff --git a/Sources/swabble/Commands/SetupCommand.swift b/Sources/swabble/Commands/SetupCommand.swift
index 4743a7a..240f4b5 100644
--- a/Sources/swabble/Commands/SetupCommand.swift
+++ b/Sources/swabble/Commands/SetupCommand.swift
@@ -1,5 +1,6 @@
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct SetupCommand: ParsableCommand {
@@ -12,14 +13,14 @@ struct SetupCommand: ParsableCommand {
     init() {}
     init(parsed: ParsedValues) {
         self.init()
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
         let cfg = SwabbleConfig()
-        try ConfigLoader.save(cfg, at: configURL)
-        print("wrote config to \(configURL?.path ?? SwabbleConfig.defaultPath.path)")
+        try ConfigLoader.save(cfg, at: self.configURL)
+        print("wrote config to \(self.configURL?.path ?? SwabbleConfig.defaultPath.path)")
     }
 
-    private var configURL: URL? { configPath.map { URL(fileURLWithPath: $0) } }
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
 }
diff --git a/Sources/swabble/Commands/StatusCommand.swift b/Sources/swabble/Commands/StatusCommand.swift
index 5defacb..ed68fbe 100644
--- a/Sources/swabble/Commands/StatusCommand.swift
+++ b/Sources/swabble/Commands/StatusCommand.swift
@@ -1,5 +1,6 @@
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct StatusCommand: ParsableCommand {
@@ -12,11 +13,11 @@ struct StatusCommand: ParsableCommand {
     init() {}
     init(parsed: ParsedValues) {
         self.init()
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
-        let cfg = try? ConfigLoader.load(at: configURL)
+        let cfg = try? ConfigLoader.load(at: self.configURL)
         let wake = cfg?.wake.word ?? "clawd"
         let wakeEnabled = cfg?.wake.enabled ?? false
         let latest = await TranscriptsStore.shared.latest().suffix(3)
@@ -29,5 +30,5 @@ struct StatusCommand: ParsableCommand {
         }
     }
 
-    private var configURL: URL? { configPath.map { URL(fileURLWithPath: $0) } }
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
 }
diff --git a/Sources/swabble/Commands/TailLogCommand.swift b/Sources/swabble/Commands/TailLogCommand.swift
index 771a5c8..451ed37 100644
--- a/Sources/swabble/Commands/TailLogCommand.swift
+++ b/Sources/swabble/Commands/TailLogCommand.swift
@@ -1,5 +1,6 @@
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct TailLogCommand: ParsableCommand {
diff --git a/Sources/swabble/Commands/TestHookCommand.swift b/Sources/swabble/Commands/TestHookCommand.swift
index 92731e0..7ca64bb 100644
--- a/Sources/swabble/Commands/TestHookCommand.swift
+++ b/Sources/swabble/Commands/TestHookCommand.swift
@@ -1,5 +1,6 @@
 import Commander
 import Foundation
+import Swabble
 
 @MainActor
 struct TestHookCommand: ParsableCommand {
@@ -14,16 +15,16 @@ struct TestHookCommand: ParsableCommand {
 
     init(parsed: ParsedValues) {
         self.init()
-        if let positional = parsed.positional.first { text = positional }
-        if let cfg = parsed.options["config"]?.last { configPath = cfg }
+        if let positional = parsed.positional.first { self.text = positional }
+        if let cfg = parsed.options["config"]?.last { self.configPath = cfg }
     }
 
     mutating func run() async throws {
-        let cfg = try ConfigLoader.load(at: configURL)
+        let cfg = try ConfigLoader.load(at: self.configURL)
         let runner = HookRunner(config: cfg)
-        try await runner.run(job: HookJob(text: text, timestamp: Date()))
+        try await runner.run(job: HookJob(text: self.text, timestamp: Date()))
         print("hook invoked")
     }
 
-    private var configURL: URL? { configPath.map { URL(fileURLWithPath: $0) } }
+    private var configURL: URL? { self.configPath.map { URL(fileURLWithPath: $0) } }
 }
diff --git a/Sources/swabble/Commands/TranscribeCommand.swift b/Sources/swabble/Commands/TranscribeCommand.swift
index f348438..81d1578 100644
--- a/Sources/swabble/Commands/TranscribeCommand.swift
+++ b/Sources/swabble/Commands/TranscribeCommand.swift
@@ -2,11 +2,13 @@ import AVFoundation
 import Commander
 import Foundation
 import Speech
+import Swabble
 
 @MainActor
 struct TranscribeCommand: ParsableCommand {
     @Argument(help: "Path to audio/video file") var inputFile: String = ""
-    @Option(name: .long("locale"), help: "Locale identifier", parsing: .singleValue) var locale: String = Locale.current.identifier
+    @Option(name: .long("locale"), help: "Locale identifier", parsing: .singleValue) var locale: String = Locale.current
+        .identifier
     @Flag(help: "Censor etiquette-sensitive content") var censor: Bool = false
     @Option(name: .long("output"), help: "Output file path") var outputFile: String?
     @Option(name: .long("format"), help: "Output format txt|srt") var format: String = "txt"
@@ -22,12 +24,12 @@ struct TranscribeCommand: ParsableCommand {
 
     init(parsed: ParsedValues) {
         self.init()
-        if let positional = parsed.positional.first { inputFile = positional }
-        if let loc = parsed.options["locale"]?.last { locale = loc }
-        if parsed.flags.contains("censor") { censor = true }
-        if let out = parsed.options["output"]?.last { outputFile = out }
-        if let fmt = parsed.options["format"]?.last { format = fmt }
-        if let len = parsed.options["maxLength"]?.last, let intVal = Int(len) { maxLength = intVal }
+        if let positional = parsed.positional.first { self.inputFile = positional }
+        if let loc = parsed.options["locale"]?.last { self.locale = loc }
+        if parsed.flags.contains("censor") { self.censor = true }
+        if let out = parsed.options["output"]?.last { self.outputFile = out }
+        if let fmt = parsed.options["format"]?.last { self.format = fmt }
+        if let len = parsed.options["maxLength"]?.last, let intVal = Int(len) { self.maxLength = intVal }
     }
 
     mutating func run() async throws {
@@ -49,7 +51,7 @@ struct TranscribeCommand: ParsableCommand {
             transcript += result.text
         }
 
-        let output = outputFormat.text(for: transcript, maxLength: maxLength)
+        let output = outputFormat.text(for: transcript, maxLength: self.maxLength)
         if let path = outputFile {
             try output.write(to: URL(fileURLWithPath: path), atomically: false, encoding: .utf8)
         } else {
diff --git a/Sources/swabble/Config/Config.swift b/Sources/swabble/Config/Config.swift
deleted file mode 100644
index 3a3673e..0000000
--- a/Sources/swabble/Config/Config.swift
+++ /dev/null
@@ -1,75 +0,0 @@
-import Foundation
-
-struct SwabbleConfig: Codable, Sendable {
-    struct Audio: Codable, Sendable {
-        var deviceName: String = ""
-        var deviceIndex: Int = -1
-        var sampleRate: Double = 16_000
-        var channels: Int = 1
-    }
-
-    struct Wake: Codable, Sendable {
-        var enabled: Bool = true
-        var word: String = "clawd"
-        var aliases: [String] = ["claude"]
-    }
-
-    struct Hook: Codable, Sendable {
-        var command: String = ""
-        var args: [String] = []
-        var prefix: String = "Voice swabble from ${hostname}: "
-        var cooldownSeconds: Double = 1
-        var minCharacters: Int = 24
-        var timeoutSeconds: Double = 5
-        var env: [String: String] = [:]
-    }
-
-    struct Logging: Codable, Sendable {
-        var level: String = "info"
-        var format: String = "text" // text|json placeholder
-    }
-
-    struct Transcripts: Codable, Sendable {
-        var enabled: Bool = true
-        var maxEntries: Int = 50
-    }
-
-    struct Speech: Codable, Sendable {
-        var localeIdentifier: String = Locale.current.identifier
-        var etiquetteReplacements: Bool = false
-    }
-
-    var audio = Audio()
-    var wake = Wake()
-    var hook = Hook()
-    var logging = Logging()
-    var transcripts = Transcripts()
-    var speech = Speech()
-
-    static let defaultPath = FileManager.default
-        .homeDirectoryForCurrentUser
-        .appendingPathComponent(".config/swabble/config.json")
-}
-
-enum ConfigError: Error {
-    case missingConfig
-}
-
-enum ConfigLoader {
-    static func load(at path: URL?) throws -> SwabbleConfig {
-        let url = path ?? SwabbleConfig.defaultPath
-        if !FileManager.default.fileExists(atPath: url.path) {
-            throw ConfigError.missingConfig
-        }
-        let data = try Data(contentsOf: url)
-        return try JSONDecoder().decode(SwabbleConfig.self, from: data)
-    }
-
-    static func save(_ config: SwabbleConfig, at path: URL?) throws {
-        let url = path ?? SwabbleConfig.defaultPath
-        let dir = url.deletingLastPathComponent()
-        try FileManager.default.createDirectory(at: dir, withIntermediateDirectories: true)
-        let data = try JSONEncoder().encode(config)
-        try data.write(to: url)
-    }
-}
diff --git a/Sources/swabble/Support/Logging.swift b/Sources/swabble/Support/Logging.swift
deleted file mode 100644
index 6a7e6bd..0000000
--- a/Sources/swabble/Support/Logging.swift
+++ /dev/null
@@ -1,41 +0,0 @@
-import Foundation
-
-enum LogLevel: String, Comparable, CaseIterable {
-    case trace, debug, info, warn, error
-
-    var rank: Int {
-        switch self {
-        case .trace: 0
-        case .debug: 1
-        case .info: 2
-        case .warn: 3
-        case .error: 4
-        }
-    }
-
-    static func < (lhs: LogLevel, rhs: LogLevel) -> Bool { lhs.rank < rhs.rank }
-}
-
-struct Logger: Sendable {
-    let level: LogLevel
-
-    init(level: LogLevel) { self.level = level }
-
-    func log(_ level: LogLevel, _ message: String) {
-        guard level >= self.level else { return }
-        let ts = ISO8601DateFormatter().string(from: Date())
-        print("[\(level.rawValue.uppercased())] \(ts) | \(message)")
-    }
-
-    func trace(_ msg: String) { log(.trace, msg) }
-    func debug(_ msg: String) { log(.debug, msg) }
-    func info(_ msg: String) { log(.info, msg) }
-    func warn(_ msg: String) { log(.warn, msg) }
-    func error(_ msg: String) { log(.error, msg) }
-}
-
-extension LogLevel {
-    init?(configValue: String) {
-        self.init(rawValue: configValue.lowercased())
-    }
-}
diff --git a/Tests/swabbleTests/ConfigTests.swift b/Tests/swabbleTests/ConfigTests.swift
index ce8b47d..e0833db 100644
--- a/Tests/swabbleTests/ConfigTests.swift
+++ b/Tests/swabbleTests/ConfigTests.swift
@@ -1,6 +1,6 @@
 import Foundation
 import Testing
-@testable import swabble
+@testable import Swabble
 
 @Test
 func configRoundTrip() throws {
diff --git a/docs/spec.md b/docs/spec.md
index 8683dcf..aa97c17 100644
--- a/docs/spec.md
+++ b/docs/spec.md
@@ -8,7 +8,7 @@ Goal: brabble-style always-on voice hook for macOS 26 using Apple Speech.framewo
 - Wake word gating (default "clawd" plus aliases) with bypass flag `--no-wake`.
 - Hook execution with cooldown, min_chars, timeout, prefix, env vars.
 - Simple config at `~/.config/swabble/config.json` (JSON, Codable) — no TOML.
-- CLI implemented with Commander (local path dependency `../Commander`).
+- CLI implemented with Commander (SwiftPM package `steipete/Commander`); core types are available via the SwiftPM library product `Swabble` for embedding.
 - Foreground `serve`; later launchd helper for start/stop/restart.
 - File transcription command emitting txt or srt.
 - Basic status/health surfaces and mic selection stubs.