diff --git a/play-services-api/src/main/aidl/com/google/android/gms/wallet/IsReadyToPayRequest.aidl b/play-services-api/src/main/aidl/com/google/android/gms/wallet/IsReadyToPayRequest.aidl
new file mode 100644
index 00000000..da1b0344
--- /dev/null
+++ b/play-services-api/src/main/aidl/com/google/android/gms/wallet/IsReadyToPayRequest.aidl
@@ -0,0 +1,3 @@
+package com.google.android.gms.wallet;
+
+parcelable IsReadyToPayRequest;
diff --git a/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IOwService.aidl b/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IOwService.aidl
index d9cb9209..ae55cffb 100644
--- a/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IOwService.aidl
+++ b/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IOwService.aidl
@@ -1,5 +1,8 @@
 package com.google.android.gms.wallet.internal;
 
-interface IOwService {
+import com.google.android.gms.wallet.internal.IWalletServiceCallbacks;
+import com.google.android.gms.wallet.IsReadyToPayRequest;
 
+interface IOwService {
+    void isReadyToPay(in IsReadyToPayRequest request, in Bundle args, IWalletServiceCallbacks callbacks) = 13;
 }
diff --git a/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IWalletServiceCallbacks.aidl b/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IWalletServiceCallbacks.aidl
new file mode 100644
index 00000000..aae5209f
--- /dev/null
+++ b/play-services-api/src/main/aidl/com/google/android/gms/wallet/internal/IWalletServiceCallbacks.aidl
@@ -0,0 +1,7 @@
+package com.google.android.gms.wallet.internal;
+
+import com.google.android.gms.common.api.Status;
+
+interface IWalletServiceCallbacks {
+    void onIsReadyToPayResponse(in Status status, boolean result, in Bundle args) = 8;
+}
diff --git a/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayRequest.java b/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayRequest.java
new file mode 100644
index 00000000..5af03541
--- /dev/null
+++ b/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayRequest.java
@@ -0,0 +1,161 @@
+/*
+ * SPDX-FileCopyrightText: 2020, microG Project Team
+ * SPDX-License-Identifier: Apache-2.0 AND CC-BY-4.0
+ * Notice: Portions of this file are reproduced from work created and shared by Google and used
+ *         according to terms described in the Creative Commons 4.0 Attribution License.
+ *         See https://developers.google.com/readme/policies for details.
+ */
+
+package com.google.android.gms.wallet;
+
+import org.microg.gms.common.PublicApi;
+import org.microg.safeparcel.AutoSafeParcelable;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+/**
+ * A Parcelable request that can optionally be passed to {@link PaymentsClient#isReadyToPay(IsReadyToPayRequest)} to specify additional filtering criteria for determining if a user is considered ready to pay.
+ */
+@PublicApi
+public class IsReadyToPayRequest extends AutoSafeParcelable {
+    @Field(2)
+    private ArrayList<Integer> allowedCardNetworks;
+    @Field(4)
+    private String unknown4;
+    @Field(5)
+    private String unknown5;
+    @Field(6)
+    private ArrayList<Integer> allowedPaymentMethods;
+    @Field(7)
+    private boolean existingPaymentMethodRequired;
+    @Field(8)
+    private String json;
+
+    private IsReadyToPayRequest() {
+    }
+
+    private IsReadyToPayRequest(String json) {
+        this.json = json;
+    }
+
+    /**
+     * Constructs {@link IsReadyToPayRequest} from a JSON object serialized as a string.
+     * <p>
+     * To convert back to a JSON object serialized as string use {@link #toJson()}.
+     * <p>
+     * Note that you shouldn't rely on the values returned by getters in {@link IsReadyToPayRequest} as they will not be populated with the data set in the given JSON.
+     * <p>
+     * For the expected format of this JSON, please see <a href="https://developers.google.com/pay/api/android/reference/object/IsReadyToPayRequest">IsReadyToPayRequest object reference documentation</a>.
+     */
+    public static IsReadyToPayRequest fromJson(String isReadyToPayRequestJson) {
+        return new IsReadyToPayRequest(isReadyToPayRequestJson);
+    }
+
+    /**
+     * @return a builder for constructing the {@link IsReadyToPayRequest} object.
+     * @deprecated Use the JSON request format instead, see {@link #fromJson(String)}.
+     */
+    public static IsReadyToPayRequest.Builder newBuilder() {
+        return new IsReadyToPayRequest().new Builder();
+    }
+
+    /**
+     * Returns {@link IsReadyToPayRequest} in JSON format.
+     * <p>
+     * Note that this will be {@code null} if this request was not constructed using {@link #fromJson(String)}.
+     * <p>
+     * For the expected format of this JSON, please see <a href="https://developers.google.com/pay/api/android/reference/object/IsReadyToPayRequest">IsReadyToPayRequest object reference documentation</a>.
+     */
+    public String toJson() {
+        return json;
+    }
+
+    /**
+     * @return the {@link WalletConstants.CardNetwork} that will be used to filter the instruments deemed acceptable by {@link PaymentsClient#isReadyToPay(IsReadyToPayRequest)}. If not explicitly set, the default supported networks will be {@link WalletConstants#CARD_NETWORK_AMEX}, {@link WalletConstants#CARD_NETWORK_DISCOVER}, {@link WalletConstants#CARD_NETWORK_MASTERCARD}, and {@link WalletConstants#CARD_NETWORK_VISA}.
+     * @deprecated Use the JSON request format instead, see {@link #fromJson(String)}.
+     */
+    public ArrayList<Integer> getAllowedCardNetworks() {
+        return allowedCardNetworks;
+    }
+
+    /**
+     * @return the supported payment credential types defined in {@link WalletConstants.PaymentMethod}, or {@code null} if no restrictions were specified.
+     * @deprecated Use the JSON request format instead, see {@link #fromJson(String)}.
+     */
+    public ArrayList<Integer> getAllowedPaymentMethods() {
+        return allowedPaymentMethods;
+    }
+
+    /**
+     * @return whether or not IsReadyToPay will be determined by the user having an existing payment method that matches the other criteria specified in the IsReadyToPayRequest.
+     * @deprecated Use the JSON request format instead, see {@link #fromJson(String)}.
+     */
+    public boolean isExistingPaymentMethodRequired() {
+        return existingPaymentMethodRequired;
+    }
+
+    /**
+     * Builder for creating an {@link IsReadyToPayRequest}.
+     *
+     * @deprecated Use the JSON request format instead, see {@link #fromJson(String)}.
+     */
+    public class Builder {
+        /**
+         * Adds a card network for cards allowed in the purchase. See {@link WalletConstants.CardNetwork} for available options. If not explicitly set via this or {@link #addAllowedCardNetworks(Collection)}, the default supported networks will be {@link WalletConstants#CARD_NETWORK_AMEX}, {@link WalletConstants#CARD_NETWORK_DISCOVER}, {@link WalletConstants#CARD_NETWORK_MASTERCARD}, and {@link WalletConstants#CARD_NETWORK_VISA}.
+         */
+        public Builder addAllowedCardNetwork(int allowedCardNetwork) {
+            if (allowedCardNetworks == null) allowedCardNetworks = new ArrayList<>();
+            allowedCardNetworks.add(allowedCardNetwork);
+            return this;
+        }
+
+        /**
+         * Adds a collection of card networks for cards allowed in the purchase. See {@link WalletConstants.CardNetwork} for available options. If not explicitly set via this or {@link #addAllowedCardNetwork(int)}, the default supported networks will be {@link WalletConstants#CARD_NETWORK_AMEX}, {@link WalletConstants#CARD_NETWORK_DISCOVER}, {@link WalletConstants#CARD_NETWORK_MASTERCARD}, and {@link WalletConstants#CARD_NETWORK_VISA}.
+         */
+        public Builder addAllowedCardNetworks(Collection<Integer> allowedCardNetworks) {
+            if (IsReadyToPayRequest.this.allowedCardNetworks == null)
+                IsReadyToPayRequest.this.allowedCardNetworks = new ArrayList<>();
+            IsReadyToPayRequest.this.allowedCardNetworks.addAll(allowedCardNetworks);
+            return this;
+        }
+
+        /**
+         * Adds an allowed payment method. See {@link WalletConstants.PaymentMethod} for available options. If not explicitly set via this or {@link #addAllowedPaymentMethods(Collection)}, then the default allowed payment method will be {@link WalletConstants#PAYMENT_METHOD_TOKENIZED_CARD}.
+         */
+        public Builder addAllowedPaymentMethod(int allowedPaymentMethod) {
+            if (allowedPaymentMethods == null) allowedPaymentMethods = new ArrayList<>();
+            allowedPaymentMethods.add(allowedPaymentMethod);
+            return this;
+        }
+
+        /**
+         * Adds a collection of allowed payment methods. See {@link WalletConstants.PaymentMethod} for available options. If not explicitly set via this or {@link #addAllowedPaymentMethod(int)}, then the default allowed payment method will be {@link WalletConstants#PAYMENT_METHOD_TOKENIZED_CARD}.
+         */
+        public Builder addAllowedPaymentMethods(Collection<Integer> allowedPaymentMethods) {
+            if (IsReadyToPayRequest.this.allowedPaymentMethods == null)
+                IsReadyToPayRequest.this.allowedPaymentMethods = new ArrayList<>();
+            IsReadyToPayRequest.this.allowedPaymentMethods.addAll(allowedPaymentMethods);
+            return this;
+        }
+
+        /**
+         * @return The actual {@link IsReadyToPayRequest} created using the data passed to the Builder object.
+         */
+        public IsReadyToPayRequest build() {
+            return IsReadyToPayRequest.this;
+        }
+
+        /**
+         * If set to true, then IsReadyToPay will only return true if the user has an existing payment method that matches the other criteria specified in the IsReadyToPayRequest.
+         * <p>
+         * If you set this to true, make sure to call {@link PaymentsClient#isReadyToPay(IsReadyToPayRequest)} as early as possible in your flow as the call may take longer to resolve due to the extra check for an existing payment method.
+         */
+        public Builder setExistingPaymentMethodRequired(boolean existingPaymentMethodRequired) {
+            IsReadyToPayRequest.this.existingPaymentMethodRequired = existingPaymentMethodRequired;
+            return this;
+        }
+    }
+
+    public static final Creator<IsReadyToPayRequest> CREATOR = new AutoCreator<>(IsReadyToPayRequest.class);
+}
diff --git a/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayResponse.java b/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayResponse.java
new file mode 100644
index 00000000..96b02404
--- /dev/null
+++ b/play-services-api/src/main/java/com/google/android/gms/wallet/IsReadyToPayResponse.java
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2020, microG Project Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.google.android.gms.wallet;
+
+import org.microg.safeparcel.AutoSafeParcelable;
+
+public class IsReadyToPayResponse extends AutoSafeParcelable {
+    @Field(1)
+    public boolean result;
+    @Field(2)
+    public String json;
+
+    private IsReadyToPayResponse() {
+    }
+
+    public IsReadyToPayResponse(boolean result, String json) {
+        this.result = result;
+        this.json = json;
+    }
+
+    public static final Creator<IsReadyToPayResponse> CREATOR = new AutoCreator<>(IsReadyToPayResponse.class);
+}
diff --git a/play-services-api/src/main/java/com/google/android/gms/wallet/WalletConstants.java b/play-services-api/src/main/java/com/google/android/gms/wallet/WalletConstants.java
new file mode 100644
index 00000000..0e3e2056
--- /dev/null
+++ b/play-services-api/src/main/java/com/google/android/gms/wallet/WalletConstants.java
@@ -0,0 +1,117 @@
+/*
+ * SPDX-FileCopyrightText: 2020, microG Project Team
+ * SPDX-License-Identifier: Apache-2.0 AND CC-BY-4.0
+ * Notice: Portions of this file are reproduced from work created and shared by Google and used
+ *         according to terms described in the Creative Commons 4.0 Attribution License.
+ *         See https://developers.google.com/readme/policies for details.
+ */
+
+package com.google.android.gms.wallet;
+
+import org.microg.gms.common.PublicApi;
+
+/**
+ * Collection of constant values used by the ClientLibrary.
+ */
+@PublicApi
+public class WalletConstants {
+    /**
+     * Credit card networks. Different APIs may support only a subset of these.
+     * <p>
+     * Available options:
+     * <ul>
+     * <li>{@link #CARD_NETWORK_AMEX}</li>
+     * <li>{@link #CARD_NETWORK_DISCOVER}</li>
+     * <li>{@link #CARD_NETWORK_JCB}</li>
+     * <li>{@link #CARD_NETWORK_MASTERCARD}</li>
+     * <li>{@link #CARD_NETWORK_VISA}</li>
+     * <li>{@link #CARD_NETWORK_INTERAC}</li>
+     * <li>{@link #CARD_NETWORK_OTHER}</li>
+     * </ul>
+     * When used with Google Pay, the following networks use EMV cryptograms instead of 3DS cryptograms as part of the payment credentials:
+     * <ul>
+     * <li>{@link #CARD_NETWORK_INTERAC}</li>
+     * </ul>
+     */
+    public @interface CardNetwork {
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_AMEX} instead.
+         */
+        int AMEX = 1;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_DISCOVER} instead.
+         */
+        int DISCOVER = 2;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_JCB} instead.
+         */
+        int JCB = 3;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_MASTERCARD} instead.
+         */
+        int MASTERCARD = 4;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_VISA} instead.
+         */
+        int VISA = 5;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_INTERAC} instead.
+         */
+        int INTERAC = 6;
+        /**
+         * @deprecated Use {@link #CARD_NETWORK_OTHER} instead.
+         */
+        int OTHER = 1000;
+    }
+
+    /**
+     * The payment methods you support.
+     * <p>
+     * Available options:
+     * <ul>
+     * <li>{@link #PAYMENT_METHOD_UNKNOWN}</li>
+     * <li>{@link #PAYMENT_METHOD_CARD}</li>
+     * <li>{@link #PAYMENT_METHOD_TOKENIZED_CARD}</li>
+     * </ul>
+     * Note {@link WalletConstants.PaymentMethod} is different from {@link PaymentMethodTokenizationType}, which identifies how you want to receive the returned payment credential.
+     */
+    public @interface PaymentMethod {
+    }
+
+    /**
+     * Payment method tokenization types.
+     * <p>
+     * Available options:
+     * <ul>
+     * <li>{@link #PAYMENT_METHOD_TOKENIZATION_TYPE_PAYMENT_GATEWAY}</li>
+     * <li>{@link #PAYMENT_METHOD_TOKENIZATION_TYPE_NETWORK_TOKEN}</li>
+     * <li>{@link #PAYMENT_METHOD_TOKENIZATION_TYPE_DIRECT}</li>
+     * </ul>
+     * Integrator can configure {@link PaymentDataRequest} to tokenize the credit card selected by the buyer for a transaction using one of the tokenization types listed above. The token for the selected payment method can be retrieved by calling {@link PaymentData#getPaymentMethodToken()}.
+     */
+    public @interface PaymentMethodTokenizationType {
+    }
+
+
+    public static final int CARD_CLASS_CREDIT = 1;
+    public static final int CARD_CLASS_DEBIT = 2;
+    public static final int CARD_CLASS_PREPAID = 3;
+    public static final int CARD_CLASS_UNKNOWN = 0;
+
+    public static final int CARD_NETWORK_AMEX = 1;
+    public static final int CARD_NETWORK_DISCOVER = 2;
+    public static final int CARD_NETWORK_INTERAC = 6;
+    public static final int CARD_NETWORK_JCB = 3;
+    public static final int CARD_NETWORK_MASTERCARD = 4;
+    public static final int CARD_NETWORK_OTHER = 1000;
+    public static final int CARD_NETWORK_VISA = 5;
+
+    public static final int PAYMENT_METHOD_CARD = 1;
+    public static final int PAYMENT_METHOD_TOKENIZED_CARD = 2;
+    public static final int PAYMENT_METHOD_UNKNOWN = 0;
+
+
+    public static final int PAYMENT_METHOD_TOKENIZATION_TYPE_DIRECT = 3;
+    public static final int PAYMENT_METHOD_TOKENIZATION_TYPE_NETWORK_TOKEN = 2;
+    public static final int PAYMENT_METHOD_TOKENIZATION_TYPE_PAYMENT_GATEWAY = 1;
+}
diff --git a/play-services-core/src/main/java/org/microg/gms/wallet/OwServiceImpl.java b/play-services-core/src/main/java/org/microg/gms/wallet/OwServiceImpl.java
index ad38eb08..3ab6de1f 100644
--- a/play-services-core/src/main/java/org/microg/gms/wallet/OwServiceImpl.java
+++ b/play-services-core/src/main/java/org/microg/gms/wallet/OwServiceImpl.java
@@ -17,16 +17,33 @@
 package org.microg.gms.wallet;
 
 import android.content.Context;
+import android.os.Bundle;
+import android.os.Handler;
 import android.os.Parcel;
 import android.os.RemoteException;
 import android.util.Log;
 
+import com.google.android.gms.common.api.Status;
+import com.google.android.gms.wallet.IsReadyToPayRequest;
 import com.google.android.gms.wallet.internal.IOwService;
+import com.google.android.gms.wallet.internal.IWalletServiceCallbacks;
 
 public class OwServiceImpl extends IOwService.Stub {
     private static final String TAG = "GmsWalletOwSvc";
+    private Context context;
 
     public OwServiceImpl(Context context) {
+        this.context = context;
+    }
+
+    @Override
+    public void isReadyToPay(IsReadyToPayRequest request, Bundle args, IWalletServiceCallbacks callbacks) throws RemoteException {
+        Log.d(TAG, "isReadyToPay: " + request.toJson());
+        try {
+            callbacks.onIsReadyToPayResponse(Status.SUCCESS, false, Bundle.EMPTY);
+        } catch (Exception e) {
+            Log.w(TAG, e);
+        }
     }
 
     @Override