Update on Batch

Tested object generation/modification with batch and it works perfectly! We should push and let users test for a while and see

PS: I tried both VS Copilot and Claude Desktop. Claude Desktop works but VS Copilot does not due to the nested structure of batch. Will look into it more.

Author: Scriptwonder

MCPForUnity/Editor/Tools/BatchExecute.cs

@@ -0,0 +1,205 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using MCPForUnity.Editor.Helpers;
+using Newtonsoft.Json.Linq;
+
+namespace MCPForUnity.Editor.Tools
+{
+    /// <summary>
+    /// Executes multiple MCP commands within a single Unity-side handler. Commands are executed sequentially
+    /// on the main thread to preserve determinism and Unity API safety.
+    /// </summary>
+    [McpForUnityTool("batch_execute", AutoRegister = false)]
+    public static class BatchExecute
+    {
+        private const int MaxCommandsPerBatch = 25;
+
+        public static async Task<object> HandleCommand(JObject @params)
+        {
+            if (@params == null)
+            {
+                return new ErrorResponse("'commands' payload is required.");
+            }
+
+            var commandsToken = @params["commands"] as JArray;
+            if (commandsToken == null || commandsToken.Count == 0)
+            {
+                return new ErrorResponse("Provide at least one command entry in 'commands'.");
+            }
+
+            if (commandsToken.Count > MaxCommandsPerBatch)
+            {
+                return new ErrorResponse($"A maximum of {MaxCommandsPerBatch} commands are allowed per batch.");
+            }
+
+            bool failFast = @params.Value<bool?>("failFast") ?? false;
+            bool parallelRequested = @params.Value<bool?>("parallel") ?? false;
+            int? maxParallel = @params.Value<int?>("maxParallelism");
+
+            if (parallelRequested)
+            {
+                McpLog.Warn("batch_execute parallel mode requested, but commands will run sequentially on the main thread for safety.");
+            }
+
+            var commandResults = new List<object>(commandsToken.Count);
+            int invocationSuccessCount = 0;
+            int invocationFailureCount = 0;
+            bool anyCommandFailed = false;
+
+            foreach (var token in commandsToken)
+            {
+                if (token is not JObject commandObj)
+                {
+                    invocationFailureCount++;
+                    anyCommandFailed = true;
+                    commandResults.Add(new
+                    {
+                        tool = (string)null,
+                        callSucceeded = false,
+                        error = "Command entries must be JSON objects."
+                    });
+                    if (failFast)
+                    {
+                        break;
+                    }
+                    continue;
+                }
+
+                string toolName = commandObj["tool"]?.ToString();
+                var rawParams = commandObj["params"] as JObject ?? new JObject();
+                var commandParams = NormalizeParameterKeys(rawParams);
+
+                if (string.IsNullOrWhiteSpace(toolName))
+                {
+                    invocationFailureCount++;
+                    anyCommandFailed = true;
+                    commandResults.Add(new
+                    {
+                        tool = toolName,
+                        callSucceeded = false,
+                        error = "Each command must include a non-empty 'tool' field."
+                    });
+                    if (failFast)
+                    {
+                        break;
+                    }
+                    continue;
+                }
+
+                try
+                {
+                    var result = await CommandRegistry.InvokeCommandAsync(toolName, commandParams).ConfigureAwait(true);
+                    invocationSuccessCount++;
+
+                    commandResults.Add(new
+                    {
+                        tool = toolName,
+                        callSucceeded = true,
+                        result
+                    });
+                }
+                catch (Exception ex)
+                {
+                    invocationFailureCount++;
+                    anyCommandFailed = true;
+                    commandResults.Add(new
+                    {
+                        tool = toolName,
+                        callSucceeded = false,
+                        error = ex.Message
+                    });
+
+                    if (failFast)
+                    {
+                        break;
+                    }
+                }
+            }
+
+            bool overallSuccess = !anyCommandFailed;
+            var data = new
+            {
+                results = commandResults,
+                callSuccessCount = invocationSuccessCount,
+                callFailureCount = invocationFailureCount,
+                parallelRequested,
+                parallelApplied = false,
+                maxParallelism = maxParallel
+            };
+
+            return overallSuccess
+                ? new SuccessResponse("Batch execution completed.", data)
+                : new ErrorResponse("One or more commands failed.", data);
+        }
+
+        private static JObject NormalizeParameterKeys(JObject source)
+        {
+            if (source == null)
+            {
+                return new JObject();
+            }
+
+            var normalized = new JObject();
+            foreach (var property in source.Properties())
+            {
+                string normalizedName = ToCamelCase(property.Name);
+                normalized[normalizedName] = NormalizeToken(property.Value);
+            }
+            return normalized;
+        }
+
+        private static JArray NormalizeArray(JArray source)
+        {
+            var normalized = new JArray();
+            foreach (var token in source)
+            {
+                normalized.Add(NormalizeToken(token));
+            }
+            return normalized;
+        }
+
+        private static JToken NormalizeToken(JToken token)
+        {
+            return token switch
+            {
+                JObject obj => NormalizeParameterKeys(obj),
+                JArray arr => NormalizeArray(arr),
+                _ => token.DeepClone()
+            };
+        }
+
+        private static string ToCamelCase(string key)
+        {
+            if (string.IsNullOrEmpty(key) || key.IndexOf('_') < 0)
+            {
+                return key;
+            }
+
+            var parts = key.Split(new[] { '_' }, StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length == 0)
+            {
+                return key;
+            }
+
+            var builder = new StringBuilder(parts[0]);
+            for (int i = 1; i < parts.Length; i++)
+            {
+                var part = parts[i];
+                if (string.IsNullOrEmpty(part))
+                {
+                    continue;
+                }
+
+                builder.Append(char.ToUpperInvariant(part[0]));
+                if (part.Length > 1)
+                {
+                    builder.Append(part.AsSpan(1));
+                }
+            }
+
+            return builder.ToString();
+        }
+    }
+}

MCPForUnity/Editor/Tools/BatchExecute.cs.meta

@@ -163,7 +163,9 @@ private static object ReimportAsset(string path, JObject properties)
         private static object CreateAsset(JObject @params)
         {
             string path = @params["path"]?.ToString();
-            string assetType = @params["assetType"]?.ToString();
+            string assetType =
+                @params["assetType"]?.ToString()
+                ?? @params["asset_type"]?.ToString(); // tolerate snake_case payloads from batched commands
             JObject properties = @params["properties"] as JObject;
 
             if (string.IsNullOrEmpty(path))