diff --git a/src/BizHawk.Client.Common/Api/HttpCommunication.cs b/src/BizHawk.Client.Common/Api/HttpCommunication.cs
index be64aec4bd6..8e229fec2dc 100644
--- a/src/BizHawk.Client.Common/Api/HttpCommunication.cs
+++ b/src/BizHawk.Client.Common/Api/HttpCommunication.cs
@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Net.Http;
+using System.Text;
 using System.Threading.Tasks;
 
 using BizHawk.Common;
@@ -64,6 +65,15 @@ public string ExecPostAsForm(string url = null, string payload = "")
 		}
 #pragma warning restore DOC105
 
+		public string ExecPostRaw(string url = null, string payload = "", string contentType = "text/plain")
+		{
+			return Post(
+				url ?? PostUrl,
+				new StringContent(payload, Encoding.UTF8, contentType),
+				payload.Length > ExpectContinueThreshold
+			).Result;
+		}
+
 		public async Task<string> Get(string url)
 		{
 			_client.DefaultRequestHeaders.ConnectionClose = false;
diff --git a/src/BizHawk.Client.Common/lua/CommonLibs/CommLuaLibrary.cs b/src/BizHawk.Client.Common/lua/CommonLibs/CommLuaLibrary.cs
index 5d30328994e..cb48c3732ed 100644
--- a/src/BizHawk.Client.Common/lua/CommonLibs/CommLuaLibrary.cs
+++ b/src/BizHawk.Client.Common/lua/CommonLibs/CommLuaLibrary.cs
@@ -196,13 +196,20 @@ public string HttpGet(string url)
 			return APIs.Comm.HTTP?.ExecGet(url);
 		}
 
-		[LuaMethod("httpPost", "makes a HTTP POST request")]
+		[LuaMethod("httpPost", "makes a HTTP POST request with the payload form encoded as the 'payload' field")]
 		public string HttpPost(string url, string payload)
 		{
 			CheckHttp();
 			return APIs.Comm.HTTP?.ExecPostAsForm(url: url, payload: payload);
 		}
 
+		[LuaMethod("httpPostRaw", "makes a HTTP POST request with the supplied payload sent directly as the body")]
+		public string HttpPostRaw(string url, string payload, string contentType)
+		{
+			CheckHttp();
+			return APIs.Comm.HTTP?.ExecPostRaw(url, payload, contentType);
+		}
+
 		[LuaMethod("httpPostScreenshot", "HTTP POST screenshot")]
 		public string HttpPostScreenshot()
 		{