diff --git a/build.gradle b/build.gradle
index 8072087..a840cc1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,6 +16,8 @@ plugins {
     // groovy.lang.GroovyRuntimeException: Cannot set the value of read-only property 'executionData'...
     // https://github.com/arturdm/jacoco-android-gradle-plugin/issues/72
     id 'com.hiya.jacoco-android' version '0.2' apply false
+
+    id 'binary-compatibility-validator' version '0.2.3'
 }
 
 subprojects {
diff --git a/core/api/core.api b/core/api/core.api
new file mode 100644
index 0000000..0c9c1cb
--- /dev/null
+++ b/core/api/core.api
@@ -0,0 +1,271 @@
+public final class com/juul/able/Able {
+	public static final field INSTANCE Lcom/juul/able/Able;
+	public final fun assert (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun assert$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun debug (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun debug$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun error (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun error$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun getLogger ()Lcom/juul/able/logger/Logger;
+	public final fun info (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun info$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun log (ILjava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun log$default (Lcom/juul/able/Able;ILjava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun setLogger (Lcom/juul/able/logger/Logger;)V
+	public final fun verbose (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun verbose$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+	public final fun warn (Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;)V
+	public static synthetic fun warn$default (Lcom/juul/able/Able;Ljava/lang/Throwable;Lkotlin/jvm/functions/Function0;ILjava/lang/Object;)V
+}
+
+public final class com/juul/able/BuildConfig {
+	public static final field APPLICATION_ID Ljava/lang/String;
+	public static final field BUILD_TYPE Ljava/lang/String;
+	public static final field DEBUG Z
+	public static final field FLAVOR Ljava/lang/String;
+	public static final field LIBRARY_PACKAGE_NAME Ljava/lang/String;
+	public static final field VERSION_CODE I
+	public static final field VERSION_NAME Ljava/lang/String;
+	public fun <init> ()V
+}
+
+public final class com/juul/able/android/BluetoothDeviceKt {
+	public static final fun connectGatt (Landroid/bluetooth/BluetoothDevice;Landroid/content/Context;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public abstract class com/juul/able/device/ConnectGattResult {
+}
+
+public abstract class com/juul/able/device/ConnectGattResult$Failure : com/juul/able/device/ConnectGattResult {
+	public abstract fun getCause ()Ljava/lang/Exception;
+}
+
+public final class com/juul/able/device/ConnectGattResult$Failure$Connection : com/juul/able/device/ConnectGattResult$Failure {
+	public fun <init> (Ljava/lang/Exception;)V
+	public final fun component1 ()Ljava/lang/Exception;
+	public final fun copy (Ljava/lang/Exception;)Lcom/juul/able/device/ConnectGattResult$Failure$Connection;
+	public static synthetic fun copy$default (Lcom/juul/able/device/ConnectGattResult$Failure$Connection;Ljava/lang/Exception;ILjava/lang/Object;)Lcom/juul/able/device/ConnectGattResult$Failure$Connection;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getCause ()Ljava/lang/Exception;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/device/ConnectGattResult$Failure$Rejected : com/juul/able/device/ConnectGattResult$Failure {
+	public fun <init> (Ljava/lang/Exception;)V
+	public final fun component1 ()Ljava/lang/Exception;
+	public final fun copy (Ljava/lang/Exception;)Lcom/juul/able/device/ConnectGattResult$Failure$Rejected;
+	public static synthetic fun copy$default (Lcom/juul/able/device/ConnectGattResult$Failure$Rejected;Ljava/lang/Exception;ILjava/lang/Object;)Lcom/juul/able/device/ConnectGattResult$Failure$Rejected;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getCause ()Ljava/lang/Exception;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/device/ConnectGattResult$Success : com/juul/able/device/ConnectGattResult {
+	public fun <init> (Lcom/juul/able/gatt/Gatt;)V
+	public final fun component1 ()Lcom/juul/able/gatt/Gatt;
+	public final fun copy (Lcom/juul/able/gatt/Gatt;)Lcom/juul/able/device/ConnectGattResult$Success;
+	public static synthetic fun copy$default (Lcom/juul/able/device/ConnectGattResult$Success;Lcom/juul/able/gatt/Gatt;ILjava/lang/Object;)Lcom/juul/able/device/ConnectGattResult$Success;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getGatt ()Lcom/juul/able/gatt/Gatt;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public abstract interface class com/juul/able/device/Device {
+	public abstract fun connectGatt (Landroid/content/Context;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/gatt/ConnectionLost : java/io/IOException {
+	public fun <init> ()V
+}
+
+public final class com/juul/able/gatt/CoroutinesGatt : com/juul/able/gatt/Gatt {
+	public fun disconnect (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun discoverServices (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun getOnCharacteristicChanged ()Lkotlinx/coroutines/flow/Flow;
+	public fun getOnConnectionStateChange ()Lkotlinx/coroutines/flow/Flow;
+	public fun getService (Ljava/util/UUID;)Landroid/bluetooth/BluetoothGattService;
+	public fun getServices ()Ljava/util/List;
+	public fun readCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun readRemoteRssi (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun requestMtu (ILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun setCharacteristicNotification (Landroid/bluetooth/BluetoothGattCharacteristic;Z)Z
+	public fun toString ()Ljava/lang/String;
+	public fun writeCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun writeDescriptor (Landroid/bluetooth/BluetoothGattDescriptor;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/gatt/EventsKt {
+	public static final fun isSuccess (Lcom/juul/able/gatt/HasGattStatus;)Z
+}
+
+public abstract interface class com/juul/able/gatt/Gatt : com/juul/able/gatt/GattConnection, com/juul/able/gatt/GattIo {
+}
+
+public abstract interface class com/juul/able/gatt/GattConnection {
+	public abstract fun disconnect (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun getOnConnectionStateChange ()Lkotlinx/coroutines/flow/Flow;
+}
+
+public final class com/juul/able/gatt/GattErrorStatus : java/io/IOException {
+	public final fun getEvent ()Lcom/juul/able/gatt/OnConnectionStateChange;
+}
+
+public abstract interface class com/juul/able/gatt/GattIo {
+	public abstract fun discoverServices (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun getOnCharacteristicChanged ()Lkotlinx/coroutines/flow/Flow;
+	public abstract fun getService (Ljava/util/UUID;)Landroid/bluetooth/BluetoothGattService;
+	public abstract fun getServices ()Ljava/util/List;
+	public abstract fun readCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun readRemoteRssi (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun requestMtu (ILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun setCharacteristicNotification (Landroid/bluetooth/BluetoothGattCharacteristic;Z)Z
+	public abstract fun writeCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun writeDescriptor (Landroid/bluetooth/BluetoothGattDescriptor;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/gatt/GattIoKt {
+	public static final fun writeCharacteristic (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattCharacteristic;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public abstract interface class com/juul/able/gatt/HasGattStatus {
+	public abstract fun getStatus ()I
+}
+
+public final class com/juul/able/gatt/OnCharacteristicChanged {
+	public fun <init> (Landroid/bluetooth/BluetoothGattCharacteristic;[B)V
+	public final fun component1 ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public final fun component2 ()[B
+	public final fun copy (Landroid/bluetooth/BluetoothGattCharacteristic;[B)Lcom/juul/able/gatt/OnCharacteristicChanged;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnCharacteristicChanged;Landroid/bluetooth/BluetoothGattCharacteristic;[BILjava/lang/Object;)Lcom/juul/able/gatt/OnCharacteristicChanged;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCharacteristic ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public final fun getValue ()[B
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnCharacteristicRead : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (Landroid/bluetooth/BluetoothGattCharacteristic;[BI)V
+	public final fun component1 ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public final fun component2 ()[B
+	public final fun component3 ()I
+	public final fun copy (Landroid/bluetooth/BluetoothGattCharacteristic;[BI)Lcom/juul/able/gatt/OnCharacteristicRead;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnCharacteristicRead;Landroid/bluetooth/BluetoothGattCharacteristic;[BIILjava/lang/Object;)Lcom/juul/able/gatt/OnCharacteristicRead;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCharacteristic ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public fun getStatus ()I
+	public final fun getValue ()[B
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnCharacteristicWrite : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (Landroid/bluetooth/BluetoothGattCharacteristic;I)V
+	public final fun component1 ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public final fun component2 ()I
+	public final fun copy (Landroid/bluetooth/BluetoothGattCharacteristic;I)Lcom/juul/able/gatt/OnCharacteristicWrite;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnCharacteristicWrite;Landroid/bluetooth/BluetoothGattCharacteristic;IILjava/lang/Object;)Lcom/juul/able/gatt/OnCharacteristicWrite;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCharacteristic ()Landroid/bluetooth/BluetoothGattCharacteristic;
+	public fun getStatus ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnConnectionStateChange : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (II)V
+	public final fun component1 ()I
+	public final fun component2 ()I
+	public final fun copy (II)Lcom/juul/able/gatt/OnConnectionStateChange;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnConnectionStateChange;IIILjava/lang/Object;)Lcom/juul/able/gatt/OnConnectionStateChange;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getNewState ()I
+	public fun getStatus ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnDescriptorRead : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (Landroid/bluetooth/BluetoothGattDescriptor;[BI)V
+	public final fun component1 ()Landroid/bluetooth/BluetoothGattDescriptor;
+	public final fun component2 ()[B
+	public final fun component3 ()I
+	public final fun copy (Landroid/bluetooth/BluetoothGattDescriptor;[BI)Lcom/juul/able/gatt/OnDescriptorRead;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnDescriptorRead;Landroid/bluetooth/BluetoothGattDescriptor;[BIILjava/lang/Object;)Lcom/juul/able/gatt/OnDescriptorRead;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getDescriptor ()Landroid/bluetooth/BluetoothGattDescriptor;
+	public fun getStatus ()I
+	public final fun getValue ()[B
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnDescriptorWrite : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (Landroid/bluetooth/BluetoothGattDescriptor;I)V
+	public final fun component1 ()Landroid/bluetooth/BluetoothGattDescriptor;
+	public final fun component2 ()I
+	public final fun copy (Landroid/bluetooth/BluetoothGattDescriptor;I)Lcom/juul/able/gatt/OnDescriptorWrite;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnDescriptorWrite;Landroid/bluetooth/BluetoothGattDescriptor;IILjava/lang/Object;)Lcom/juul/able/gatt/OnDescriptorWrite;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getDescriptor ()Landroid/bluetooth/BluetoothGattDescriptor;
+	public fun getStatus ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnMtuChanged : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (II)V
+	public final fun component1 ()I
+	public final fun component2 ()I
+	public final fun copy (II)Lcom/juul/able/gatt/OnMtuChanged;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnMtuChanged;IIILjava/lang/Object;)Lcom/juul/able/gatt/OnMtuChanged;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getMtu ()I
+	public fun getStatus ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OnReadRemoteRssi : com/juul/able/gatt/HasGattStatus {
+	public fun <init> (II)V
+	public final fun component1 ()I
+	public final fun component2 ()I
+	public final fun copy (II)Lcom/juul/able/gatt/OnReadRemoteRssi;
+	public static synthetic fun copy$default (Lcom/juul/able/gatt/OnReadRemoteRssi;IIILjava/lang/Object;)Lcom/juul/able/gatt/OnReadRemoteRssi;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getRssi ()I
+	public fun getStatus ()I
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/gatt/OutOfOrderGattCallback : java/io/IOException {
+}
+
+public final class com/juul/able/logger/AndroidLogger : com/juul/able/logger/Logger {
+	public fun <init> ()V
+	public fun isLoggable (I)Z
+	public fun log (ILjava/lang/Throwable;Ljava/lang/String;)V
+}
+
+public abstract interface class com/juul/able/logger/Logger {
+	public abstract fun isLoggable (I)Z
+	public abstract fun log (ILjava/lang/Throwable;Ljava/lang/String;)V
+}
+
+public final class com/juul/able/logger/Logger$DefaultImpls {
+	public static synthetic fun log$default (Lcom/juul/able/logger/Logger;ILjava/lang/Throwable;Ljava/lang/String;ILjava/lang/Object;)V
+}
+
+public final class com/juul/able/logger/LoggerKt {
+	public static final field ASSERT I
+	public static final field DEBUG I
+	public static final field ERROR I
+	public static final field INFO I
+	public static final field VERBOSE I
+	public static final field WARN I
+}
+
diff --git a/keep-alive/api/keep-alive.api b/keep-alive/api/keep-alive.api
new file mode 100644
index 0000000..23d3c11
--- /dev/null
+++ b/keep-alive/api/keep-alive.api
@@ -0,0 +1,79 @@
+public final class com/juul/able/keepalive/BuildConfig {
+	public static final field APPLICATION_ID Ljava/lang/String;
+	public static final field BUILD_TYPE Ljava/lang/String;
+	public static final field DEBUG Z
+	public static final field FLAVOR Ljava/lang/String;
+	public static final field LIBRARY_PACKAGE_NAME Ljava/lang/String;
+	public static final field VERSION_CODE I
+	public static final field VERSION_NAME Ljava/lang/String;
+	public fun <init> ()V
+}
+
+public final class com/juul/able/keepalive/ConnectionRejected : java/io/IOException {
+}
+
+public final class com/juul/able/keepalive/KeepAliveGatt : com/juul/able/gatt/GattIo {
+	public final fun connect ()Z
+	public final fun disconnect (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun discoverServices (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun getOnCharacteristicChanged ()Lkotlinx/coroutines/flow/Flow;
+	public fun getService (Ljava/util/UUID;)Landroid/bluetooth/BluetoothGattService;
+	public fun getServices ()Ljava/util/List;
+	public final fun getState ()Lkotlinx/coroutines/flow/Flow;
+	public fun readCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun readRemoteRssi (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun requestMtu (ILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun setCharacteristicNotification (Landroid/bluetooth/BluetoothGattCharacteristic;Z)Z
+	public fun toString ()Ljava/lang/String;
+	public fun writeCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun writeDescriptor (Landroid/bluetooth/BluetoothGattDescriptor;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/keepalive/KeepAliveGattKt {
+	public static final fun keepAliveGatt (Lkotlinx/coroutines/CoroutineScope;Landroid/content/Context;Landroid/bluetooth/BluetoothDevice;JLkotlin/jvm/functions/Function2;)Lcom/juul/able/keepalive/KeepAliveGatt;
+	public static synthetic fun keepAliveGatt$default (Lkotlinx/coroutines/CoroutineScope;Landroid/content/Context;Landroid/bluetooth/BluetoothDevice;JLkotlin/jvm/functions/Function2;ILjava/lang/Object;)Lcom/juul/able/keepalive/KeepAliveGatt;
+}
+
+public final class com/juul/able/keepalive/NotReady : java/lang/IllegalStateException {
+}
+
+public abstract class com/juul/able/keepalive/State {
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/keepalive/State$Cancelled : com/juul/able/keepalive/State {
+	public fun <init> (Ljava/lang/Throwable;)V
+	public final fun component1 ()Ljava/lang/Throwable;
+	public final fun copy (Ljava/lang/Throwable;)Lcom/juul/able/keepalive/State$Cancelled;
+	public static synthetic fun copy$default (Lcom/juul/able/keepalive/State$Cancelled;Ljava/lang/Throwable;ILjava/lang/Object;)Lcom/juul/able/keepalive/State$Cancelled;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCause ()Ljava/lang/Throwable;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/keepalive/State$Connected : com/juul/able/keepalive/State {
+	public static final field INSTANCE Lcom/juul/able/keepalive/State$Connected;
+}
+
+public final class com/juul/able/keepalive/State$Connecting : com/juul/able/keepalive/State {
+	public static final field INSTANCE Lcom/juul/able/keepalive/State$Connecting;
+}
+
+public final class com/juul/able/keepalive/State$Disconnected : com/juul/able/keepalive/State {
+	public fun <init> ()V
+	public fun <init> (Ljava/lang/Throwable;)V
+	public synthetic fun <init> (Ljava/lang/Throwable;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()Ljava/lang/Throwable;
+	public final fun copy (Ljava/lang/Throwable;)Lcom/juul/able/keepalive/State$Disconnected;
+	public static synthetic fun copy$default (Lcom/juul/able/keepalive/State$Disconnected;Ljava/lang/Throwable;ILjava/lang/Object;)Lcom/juul/able/keepalive/State$Disconnected;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCause ()Ljava/lang/Throwable;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class com/juul/able/keepalive/State$Disconnecting : com/juul/able/keepalive/State {
+	public static final field INSTANCE Lcom/juul/able/keepalive/State$Disconnecting;
+}
+
diff --git a/processor/api/processor.api b/processor/api/processor.api
new file mode 100644
index 0000000..7a3ec7d
--- /dev/null
+++ b/processor/api/processor.api
@@ -0,0 +1,35 @@
+public final class com/juul/able/processor/BuildConfig {
+	public static final field APPLICATION_ID Ljava/lang/String;
+	public static final field BUILD_TYPE Ljava/lang/String;
+	public static final field DEBUG Z
+	public static final field FLAVOR Ljava/lang/String;
+	public static final field LIBRARY_PACKAGE_NAME Ljava/lang/String;
+	public static final field VERSION_CODE I
+	public static final field VERSION_NAME Ljava/lang/String;
+	public fun <init> ()V
+}
+
+public final class com/juul/able/processor/GattProcessor : com/juul/able/gatt/GattIo {
+	public fun <init> (Lcom/juul/able/gatt/GattIo;[Lcom/juul/able/processor/Processor;)V
+	public fun discoverServices (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun getOnCharacteristicChanged ()Lkotlinx/coroutines/flow/Flow;
+	public fun getService (Ljava/util/UUID;)Landroid/bluetooth/BluetoothGattService;
+	public fun getServices ()Ljava/util/List;
+	public fun readCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun readRemoteRssi (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun requestMtu (ILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun setCharacteristicNotification (Landroid/bluetooth/BluetoothGattCharacteristic;Z)Z
+	public fun writeCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public fun writeDescriptor (Landroid/bluetooth/BluetoothGattDescriptor;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/processor/GattProcessorKt {
+	public static final fun withProcessors (Lcom/juul/able/gatt/GattIo;[Lcom/juul/able/processor/Processor;)Lcom/juul/able/processor/GattProcessor;
+}
+
+public abstract interface class com/juul/able/processor/Processor {
+	public abstract fun readCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[B)[B
+	public abstract fun writeCharacteristic (Landroid/bluetooth/BluetoothGattCharacteristic;[BI)[B
+	public abstract fun writeDescriptor (Landroid/bluetooth/BluetoothGattDescriptor;[B)[B
+}
+
diff --git a/settings.gradle b/settings.gradle
index fda0804..5af875a 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -10,6 +10,8 @@ pluginManagement {
             // https://medium.com/@StefMa/its-time-to-ditch-the-buildscript-block-a1ab12e0d9ce
             if (requested.id.id.startsWith("com.android")) {
                 useModule("com.android.tools.build:gradle:${requested.version}")
+            } else if (requested.id.id == "binary-compatibility-validator") {
+                useModule("org.jetbrains.kotlinx:binary-compatibility-validator:${requested.version}")
             }
         }
     }
diff --git a/throw/api/throw.api b/throw/api/throw.api
new file mode 100644
index 0000000..315e728
--- /dev/null
+++ b/throw/api/throw.api
@@ -0,0 +1,26 @@
+public final class com/juul/able/throwable/BuildConfig {
+	public static final field APPLICATION_ID Ljava/lang/String;
+	public static final field BUILD_TYPE Ljava/lang/String;
+	public static final field DEBUG Z
+	public static final field FLAVOR Ljava/lang/String;
+	public static final field LIBRARY_PACKAGE_NAME Ljava/lang/String;
+	public static final field VERSION_CODE I
+	public static final field VERSION_NAME Ljava/lang/String;
+	public fun <init> ()V
+}
+
+public final class com/juul/able/throwable/GattOrThrowKt {
+	public static final fun discoverServicesOrThrow (Lcom/juul/able/gatt/GattIo;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun readCharacteristicOrThrow (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattCharacteristic;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun readRemoteRssiOrThrow (Lcom/juul/able/gatt/GattIo;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun requestMtuOrThrow (Lcom/juul/able/gatt/GattIo;ILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static final fun setCharacteristicNotificationOrThrow (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattCharacteristic;Z)V
+	public static final fun writeCharacteristicOrThrow (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public static synthetic fun writeCharacteristicOrThrow$default (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattCharacteristic;[BILkotlin/coroutines/Continuation;ILjava/lang/Object;)Ljava/lang/Object;
+	public static final fun writeDescriptorOrThrow (Lcom/juul/able/gatt/GattIo;Landroid/bluetooth/BluetoothGattDescriptor;[BLkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
+public final class com/juul/able/throwable/android/BluetoothDeviceOrThrowKt {
+	public static final fun connectGattOrThrow (Landroid/bluetooth/BluetoothDevice;Landroid/content/Context;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
diff --git a/timber-logger/api/timber-logger.api b/timber-logger/api/timber-logger.api
new file mode 100644
index 0000000..58a5fce
--- /dev/null
+++ b/timber-logger/api/timber-logger.api
@@ -0,0 +1,17 @@
+public final class com/juul/able/logger/timber/BuildConfig {
+	public static final field APPLICATION_ID Ljava/lang/String;
+	public static final field BUILD_TYPE Ljava/lang/String;
+	public static final field DEBUG Z
+	public static final field FLAVOR Ljava/lang/String;
+	public static final field LIBRARY_PACKAGE_NAME Ljava/lang/String;
+	public static final field VERSION_CODE I
+	public static final field VERSION_NAME Ljava/lang/String;
+	public fun <init> ()V
+}
+
+public final class com/juul/able/logger/timber/TimberLogger : com/juul/able/logger/Logger {
+	public fun <init> ()V
+	public fun isLoggable (I)Z
+	public fun log (ILjava/lang/Throwable;Ljava/lang/String;)V
+}
+