diff --git a/src/ReC.Client/Api/BaseCrudApi.cs b/src/ReC.Client/Api/BaseCrudApi.cs
index 50e2b3d..bcb33f2 100644
--- a/src/ReC.Client/Api/BaseCrudApi.cs
+++ b/src/ReC.Client/Api/BaseCrudApi.cs
@@ -88,7 +88,8 @@ namespace ReC.Client.Api
         }
 
         /// <summary>
-        /// Deletes resources with identifiers supplied in the payload.
+        /// Deletes resources with identifiers supplied in the payload. The payload is serialized into
+        /// the query string because the API binds delete payloads from the URL query.
         /// </summary>
         /// <typeparam name="T">The payload type containing identifiers.</typeparam>
         /// <param name="payload">The payload to send.</param>
@@ -96,11 +97,8 @@ namespace ReC.Client.Api
         /// <exception cref="ReCApiException">Thrown when the API responds with a non-success status code.</exception>
         public async Task DeleteAsync<T>(T payload, CancellationToken cancel = default)
         {
-            using (var request = new HttpRequestMessage(HttpMethod.Delete, ResourcePath)
-            {
-                Content = ReCClientHelpers.ToJsonContent(payload)
-            })
-            using (var resp = await Http.SendAsync(request, cancel))
+            var query = ReCClientHelpers.BuildQueryFromObject(payload);
+            using (var resp = await Http.DeleteAsync($"{ResourcePath}{query}", cancel))
             {
                 await ReCClientHelpers.HandleResponseAsync(resp, Logger, Options.LogSuccessfulRequests, cancel).ConfigureAwait(false);
             }
diff --git a/src/ReC.Client/Api/CommonApi.cs b/src/ReC.Client/Api/CommonApi.cs
index 86ddc67..e37d6e1 100644
--- a/src/ReC.Client/Api/CommonApi.cs
+++ b/src/ReC.Client/Api/CommonApi.cs
@@ -6,7 +6,9 @@ using Microsoft.Extensions.Logging;
 namespace ReC.Client.Api
 {
     /// <summary>
-    /// Provides access to common object endpoints.
+    /// Provides access to common object endpoints. The Common API binds update and delete
+    /// payloads from the body / query string (no id route segment), so the inherited CRUD
+    /// helpers from <see cref="BaseCrudApi"/> are hidden with overloads that match the API.
     /// </summary>
     public class CommonApi : BaseCrudApi
     {
@@ -23,5 +25,23 @@ namespace ReC.Client.Api
 #endif
         {
         }
+
+        /// <summary>
+        /// Updates an object via the Common update procedure. The identifier is expected to be
+        /// part of <paramref name="payload"/> rather than the URL.
+        /// </summary>
+        /// <typeparam name="T">The payload type.</typeparam>
+        /// <param name="payload">The payload to send.</param>
+        /// <param name="cancel">A token to cancel the operation.</param>
+        /// <exception cref="ReCApiException">Thrown when the API responds with a non-success status code.</exception>
+        public async Task UpdateAsync<T>(T payload, CancellationToken cancel = default)
+        {
+            using (var content = ReCClientHelpers.ToJsonContent(payload))
+            using (var resp = await Http.PutAsync(ResourcePath, content, cancel))
+            {
+                await ReCClientHelpers.HandleResponseAsync(resp, Logger, Options.LogSuccessfulRequests, cancel).ConfigureAwait(false);
+            }
+        }
     }
 }
+
diff --git a/src/ReC.Client/Api/ProfileApi.cs b/src/ReC.Client/Api/ProfileApi.cs
index f5f9100..b0a62be 100644
--- a/src/ReC.Client/Api/ProfileApi.cs
+++ b/src/ReC.Client/Api/ProfileApi.cs
@@ -25,13 +25,13 @@ namespace ReC.Client.Api
         }
 
         /// <summary>
-        /// Retrieves a profile by identifier.
+        /// Retrieves profiles, optionally filtered by identifier.
         /// </summary>
-        /// <param name="id">The profile identifier.</param>
-        /// <param name="includeActions">Whether to include related actions.</param>
+        /// <param name="id">Optional profile identifier filter. When <see langword="null"/>, all profiles are returned.</param>
+        /// <param name="includeActions">Whether to include related actions. Defaults to <see langword="true"/> to match the API default.</param>
         /// <param name="cancel">A token to cancel the operation.</param>
         /// <returns>The HTTP response message.</returns>
-        public Task<HttpResponseMessage> GetAsync(long id, bool includeActions = false, CancellationToken cancel = default)
+        public Task<HttpResponseMessage> GetAsync(long? id = null, bool includeActions = true, CancellationToken cancel = default)
         {
             var query = ReCClientHelpers.BuildQuery(("Id", id), ("IncludeActions", includeActions));
             return Http.GetAsync($"{ResourcePath}{query}", cancel);
diff --git a/src/ReC.Client/Api/RecActionApi.cs b/src/ReC.Client/Api/RecActionApi.cs
index 8d2b387..f038a90 100644
--- a/src/ReC.Client/Api/RecActionApi.cs
+++ b/src/ReC.Client/Api/RecActionApi.cs
@@ -25,13 +25,17 @@ namespace ReC.Client.Api
         }
 
         /// <summary>
-        /// Invokes a ReC action for the specified profile.
+        /// Invokes a batch of RecActions for the specified profile.
         /// </summary>
         /// <param name="profileId">The profile identifier.</param>
         /// <param name="references">Optional reference values to pass through to all result records.</param>
         /// <param name="cancellationToken">A token to cancel the operation.</param>
         /// <exception cref="ReCApiException">Thrown when the API responds with a non-success status code.</exception>
-        public async Task InvokeAsync(int profileId, InvokeReferences references, CancellationToken cancellationToken = default)
+#if NETFRAMEWORK
+        public async Task InvokeAsync(long profileId, InvokeReferences references = null, CancellationToken cancellationToken = default)
+#else
+        public async Task InvokeAsync(long profileId, InvokeReferences? references = null, CancellationToken cancellationToken = default)
+#endif
         {
             var content = references != null ? ReCClientHelpers.ToJsonContent(references) : null;
             using (content)
@@ -42,13 +46,13 @@ namespace ReC.Client.Api
         }
 
         /// <summary>
-        /// Invokes a ReC action for the specified profile.
+        /// Invokes a batch of RecActions for the specified profile.
         /// </summary>
         /// <param name="profileId">The profile identifier.</param>
         /// <param name="batchId">Batch identifier.</param>
         /// <param name="cancellationToken">A token to cancel the operation.</param>
         /// <exception cref="ReCApiException">Thrown when the API responds with a non-success status code.</exception>
-        public Task InvokeAsync(int profileId, string batchId, CancellationToken cancellationToken = default)
+        public Task InvokeAsync(long profileId, string batchId, CancellationToken cancellationToken = default)
         {
             return InvokeAsync(profileId, new InvokeReferences() { BatchId = batchId }, cancellationToken);
         }
diff --git a/src/ReC.Client/Api/ResultApi.cs b/src/ReC.Client/Api/ResultApi.cs
index ceb2681..1a818c3 100644
--- a/src/ReC.Client/Api/ResultApi.cs
+++ b/src/ReC.Client/Api/ResultApi.cs
@@ -30,11 +30,26 @@ namespace ReC.Client.Api
         /// <param name="id">Optional result identifier.</param>
         /// <param name="actionId">Optional action identifier.</param>
         /// <param name="profileId">Optional profile identifier.</param>
+        /// <param name="batchId">Optional batch identifier.</param>
+        /// <param name="includeAction">Whether to include the related action. Defaults to <see langword="true"/> to match the API default.</param>
+        /// <param name="includeProfile">Whether to include the related profile. Defaults to <see langword="false"/> to match the API default.</param>
+        /// <param name="lastBatch">When <see langword="true"/>, restricts results to those belonging to the most recent batch matching the other filters.</param>
         /// <param name="cancel">A token to cancel the operation.</param>
         /// <returns>The HTTP response message.</returns>
-        public Task<HttpResponseMessage> GetAsync(long? id = null, long? actionId = null, long? profileId = null, CancellationToken cancel = default)
+#if NETFRAMEWORK
+        public Task<HttpResponseMessage> GetAsync(long? id = null, long? actionId = null, long? profileId = null, string batchId = null, bool includeAction = true, bool includeProfile = false, bool lastBatch = false, CancellationToken cancel = default)
+#else
+        public Task<HttpResponseMessage> GetAsync(long? id = null, long? actionId = null, long? profileId = null, string? batchId = null, bool includeAction = true, bool includeProfile = false, bool lastBatch = false, CancellationToken cancel = default)
+#endif
         {
-            var query = ReCClientHelpers.BuildQuery(("Id", id), ("ActionId", actionId), ("ProfileId", profileId));
+            var query = ReCClientHelpers.BuildQuery(
+                ("Id", id),
+                ("ActionId", actionId),
+                ("ProfileId", profileId),
+                ("BatchId", batchId),
+                ("IncludeAction", includeAction),
+                ("IncludeProfile", includeProfile),
+                ("LastBatch", lastBatch));
             return Http.GetAsync($"{ResourcePath}{query}", cancel);
         }
     }