From 1be0904506294251cc7238adfaf37f0beac1bb14 Mon Sep 17 00:00:00 2001
From: AJ Isaacs <ajisaacs27@gmail.com>
Date: Tue, 22 Sep 2026 13:02:28 -0400
Subject: [PATCH] fix(mcp): make opennest server launchable on any machine

.mcp.json pointed at C:/Users/AJ/.claude/mcp/OpenNest.Mcp/run.cmd, a
profile path and wrapper script that only existed on one machine, so the
server failed with CONNECTION_CLOSED everywhere else. Launch the published
exe via ${USERPROFILE} instead.

Also route console logging to stderr: the host's default console logger
wrote to stdout, interleaving log lines with the JSON-RPC stream.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .mcp.json               | 4 ++--
 OpenNest.Mcp/Program.cs | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/.mcp.json b/.mcp.json
index 633400b..48a1660 100644
--- a/.mcp.json
+++ b/.mcp.json
@@ -1,8 +1,8 @@
 {
   "mcpServers": {
     "opennest": {
-      "command": "cmd",
-      "args": ["/c", "C:/Users/AJ/.claude/mcp/OpenNest.Mcp/run.cmd"]
+      "command": "${USERPROFILE}/.claude/mcp/OpenNest.Mcp/OpenNest.Mcp.exe",
+      "args": []
     }
   }
 }
diff --git a/OpenNest.Mcp/Program.cs b/OpenNest.Mcp/Program.cs
index 35e27d4..692cd43 100644
--- a/OpenNest.Mcp/Program.cs
+++ b/OpenNest.Mcp/Program.cs
@@ -1,9 +1,13 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
 using OpenNest.Mcp;
 
 var builder = Host.CreateApplicationBuilder(args);
 
+// stdout carries the JSON-RPC stream; console logs must go to stderr or they corrupt it.
+builder.Logging.AddConsole(o => o.LogToStandardErrorThreshold = LogLevel.Trace);
+
 builder.Services.AddSingleton<NestSession>();
 builder
     .Services.AddMcpServer()