diff --git a/nearby/framework/java/android/nearby/FastPairDevice.aidl b/nearby/framework/java/android/nearby/FastPairDevice.aidl
new file mode 100644
index 0000000..5942966
--- /dev/null
+++ b/nearby/framework/java/android/nearby/FastPairDevice.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+/**
+ * A class represents a Fast Pair device that can be discovered by multiple mediums.
+ *
+ * {@hide}
+ */
+parcelable FastPairDevice;
diff --git a/nearby/framework/java/android/nearby/FastPairStatusCallback.java b/nearby/framework/java/android/nearby/FastPairStatusCallback.java
new file mode 100644
index 0000000..1567828
--- /dev/null
+++ b/nearby/framework/java/android/nearby/FastPairStatusCallback.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import android.annotation.NonNull;
+
+/**
+ * Reports the pair status for an ongoing pair with a {@link FastPairDevice}.
+ * @hide
+ */
+public interface FastPairStatusCallback {
+
+    /** Reports a pair status related metadata associated with a {@link FastPairDevice} */
+    void onPairUpdate(@NonNull FastPairDevice fastPairDevice,
+            PairStatusMetadata pairStatusMetadata);
+}
diff --git a/nearby/framework/java/android/nearby/PairStatusMetadata.aidl b/nearby/framework/java/android/nearby/PairStatusMetadata.aidl
new file mode 100644
index 0000000..911a300
--- /dev/null
+++ b/nearby/framework/java/android/nearby/PairStatusMetadata.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+/**
+ * Metadata about an ongoing paring. Wraps transient data like status and progress.
+ *
+ * @hide
+ */
+parcelable PairStatusMetadata;
diff --git a/nearby/framework/java/android/nearby/PairStatusMetadata.java b/nearby/framework/java/android/nearby/PairStatusMetadata.java
new file mode 100644
index 0000000..438cd6b
--- /dev/null
+++ b/nearby/framework/java/android/nearby/PairStatusMetadata.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Objects;
+
+/**
+ * Metadata about an ongoing paring. Wraps transient data like status and progress.
+ *
+ * @hide
+ */
+public final class PairStatusMetadata implements Parcelable {
+
+    @Status
+    private final int mStatus;
+
+    /** The status of the pairing. */
+    @IntDef({
+            Status.UNKNOWN,
+            Status.SUCCESS,
+            Status.FAIL,
+            Status.DISMISS
+    })
+    public @interface Status {
+        int UNKNOWN = 1000;
+        int SUCCESS = 1001;
+        int FAIL = 1002;
+        int DISMISS = 1003;
+    }
+
+    /** Converts the status to readable string. */
+    public static String statusToString(@Status int status) {
+        switch (status) {
+            case Status.SUCCESS:
+                return "SUCCESS";
+            case Status.FAIL:
+                return "FAIL";
+            case Status.DISMISS:
+                return "DISMISS";
+            case Status.UNKNOWN:
+            default:
+                return "UNKNOWN";
+        }
+    }
+
+    public int getStatus() {
+        return mStatus;
+    }
+
+    @Override
+    public String toString() {
+        return "PairStatusMetadata[ status=" + statusToString(mStatus) + "]";
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof PairStatusMetadata) {
+            return mStatus == ((PairStatusMetadata) other).mStatus;
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mStatus);
+    }
+
+    public PairStatusMetadata(@Status int status) {
+        mStatus = status;
+    }
+
+    public static final Creator<PairStatusMetadata> CREATOR = new Creator<PairStatusMetadata>() {
+        @Override
+        public PairStatusMetadata createFromParcel(Parcel in) {
+            return new PairStatusMetadata(in.readInt());
+        }
+
+        @Override
+        public PairStatusMetadata[] newArray(int size) {
+            return new PairStatusMetadata[size];
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public int getStability() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel dest, int flags) {
+        dest.writeInt(mStatus);
+    }
+}
diff --git a/nearby/framework/java/android/nearby/aidl/IFastPairClient.aidl b/nearby/framework/java/android/nearby/aidl/IFastPairClient.aidl
new file mode 100644
index 0000000..4f666bc
--- /dev/null
+++ b/nearby/framework/java/android/nearby/aidl/IFastPairClient.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2022, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby.aidl;
+
+import android.nearby.aidl.IFastPairStatusCallback;
+import android.nearby.FastPairDevice;
+
+/**
+ * 0p API for controlling Fast Pair. Used to talk between foreground activities
+ * and background services.
+ *
+ * {@hide}
+ */
+interface IFastPairClient {
+
+    void registerHalfSheet(in IFastPairStatusCallback fastPairStatusCallback);
+
+    void unregisterHalfSheet(in IFastPairStatusCallback fastPairStatusCallback);
+
+    void connect(in FastPairDevice fastPairDevice);
+}
\ No newline at end of file
diff --git a/nearby/framework/java/android/nearby/aidl/IFastPairStatusCallback.aidl b/nearby/framework/java/android/nearby/aidl/IFastPairStatusCallback.aidl
new file mode 100644
index 0000000..d844c06
--- /dev/null
+++ b/nearby/framework/java/android/nearby/aidl/IFastPairStatusCallback.aidl
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2022, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby.aidl;
+
+import android.nearby.FastPairDevice;
+import android.nearby.PairStatusMetadata;
+
+/**
+ *
+ * Provides callbacks for Fast Pair foreground activity to learn about paring status from backend.
+ *
+ * {@hide}
+ */
+interface IFastPairStatusCallback {
+
+    /** Reports a pair status related metadata associated with a {@link FastPairDevice} */
+    void onPairUpdate(in FastPairDevice fastPairDevice, in PairStatusMetadata pairStatusMetadata);
+}