From 6d9c6fd2b1ca9efead9095a2975ae13ffd3c7613 Mon Sep 17 00:00:00 2001
From: ssalbdivad <david@arktype.io>
Date: Thu, 9 Oct 2025 18:04:00 -0400
Subject: [PATCH] try to add debugging to mcp server

---
 agents/claude.ts    | 24 ++++++++++++++++++++++++
 entry.cjs           | 21 ++++++++++++++++++++-
 mcp/config.ts       |  2 +-
 mcp/debug-server.sh | 16 ++++++++++++++++
 package.json        |  2 +-
 5 files changed, 62 insertions(+), 3 deletions(-)
 create mode 100755 mcp/debug-server.sh

diff --git a/agents/claude.ts b/agents/claude.ts
index 485258d..b99d12c 100644
--- a/agents/claude.ts
+++ b/agents/claude.ts
@@ -1,3 +1,4 @@
+import { readFileSync } from "node:fs";
 import { access, constants } from "node:fs/promises";
 import * as core from "@actions/core";
 import { createMcpConfig } from "../mcp/config.ts";
@@ -192,6 +193,29 @@ function processJSONChunk(chunk: string, agent?: ClaudeAgent): void {
               ],
             ])
           );
+
+          // Check for failed MCP servers and show debug logs
+          if (parsedChunk.mcp_servers?.length > 0) {
+            const failedServers = parsedChunk.mcp_servers.filter(
+              (server: any) => server.status === "failed"
+            );
+            if (failedServers.length > 0) {
+              const failedNames = failedServers.map((server: any) => server.name).join(", ");
+
+              // Try to read MCP server debug logs
+              let debugInfo = "";
+              try {
+                const logContent = readFileSync("/tmp/mcp-server.log", "utf-8");
+                core.error("MCP Server Debug Log:");
+                core.error(logContent);
+                debugInfo = " (see debug log above)";
+              } catch (logError) {
+                debugInfo = ` (could not read debug log: ${logError instanceof Error ? logError.message : String(logError)})`;
+              }
+
+              throw new Error(`MCP servers failed to start: ${failedNames}${debugInfo}`);
+            }
+          }
         }
         break;
 
diff --git a/entry.cjs b/entry.cjs
index f236eea..37c571d 100755
--- a/entry.cjs
+++ b/entry.cjs
@@ -25500,6 +25500,7 @@ var core4 = __toESM(require_core(), 1);
 var core2 = __toESM(require_core(), 1);
 
 // agents/claude.ts
+var import_node_fs = require("node:fs");
 var import_promises = require("node:fs/promises");
 var core = __toESM(require_core(), 1);
 
@@ -25514,7 +25515,7 @@ function createMcpConfig(githubInstallationToken) {
     {
       mcpServers: {
         minimal_github_comment: {
-          command: "node",
+          command: `${actionPath}/mcp/debug-server.sh`,
           args: [`${actionPath}/mcp/server.ts`],
           env: {
             GITHUB_INSTALLATION_TOKEN: githubInstallationToken,
@@ -25858,6 +25859,24 @@ function processJSONChunk(chunk, agent) {
               ]
             ])
           );
+          if (parsedChunk.mcp_servers?.length > 0) {
+            const failedServers = parsedChunk.mcp_servers.filter(
+              (server) => server.status === "failed"
+            );
+            if (failedServers.length > 0) {
+              const failedNames = failedServers.map((server) => server.name).join(", ");
+              let debugInfo = "";
+              try {
+                const logContent = (0, import_node_fs.readFileSync)("/tmp/mcp-server.log", "utf-8");
+                core.error("MCP Server Debug Log:");
+                core.error(logContent);
+                debugInfo = " (see debug log above)";
+              } catch (logError) {
+                debugInfo = ` (could not read debug log: ${logError instanceof Error ? logError.message : String(logError)})`;
+              }
+              throw new Error(`MCP servers failed to start: ${failedNames}${debugInfo}`);
+            }
+          }
         }
         break;
       case "assistant":
diff --git a/mcp/config.ts b/mcp/config.ts
index 6d64471..64d3d43 100644
--- a/mcp/config.ts
+++ b/mcp/config.ts
@@ -13,7 +13,7 @@ export function createMcpConfig(githubInstallationToken: string) {
     {
       mcpServers: {
         minimal_github_comment: {
-          command: "node",
+          command: `${actionPath}/mcp/debug-server.sh`,
           args: [`${actionPath}/mcp/server.ts`],
           env: {
             GITHUB_INSTALLATION_TOKEN: githubInstallationToken,
diff --git a/mcp/debug-server.sh b/mcp/debug-server.sh
new file mode 100755
index 0000000..efb4bbf
--- /dev/null
+++ b/mcp/debug-server.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Wrapper script to capture MCP server logs for debugging
+LOG_FILE="/tmp/mcp-server.log"
+
+echo "=== MCP Server Debug Wrapper Starting ===" >> "$LOG_FILE"
+echo "Timestamp: $(date)" >> "$LOG_FILE"
+echo "Working directory: $(pwd)" >> "$LOG_FILE"
+echo "Environment variables:" >> "$LOG_FILE"
+env | grep -E "(GITHUB_|MCP_|NODE_)" >> "$LOG_FILE"
+echo "Node.js version: $(node --version)" >> "$LOG_FILE"
+echo "Arguments: $@" >> "$LOG_FILE"
+echo "=== Starting MCP Server ===" >> "$LOG_FILE"
+
+# Execute the actual MCP server, capturing both stdout and stderr
+exec node "$@" 2>&1 | tee -a "$LOG_FILE"
\ No newline at end of file
diff --git a/package.json b/package.json
index c1681d8..bbd5ea5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@pullfrog/action",
-  "version": "0.0.18",
+  "version": "0.0.19",
   "type": "module",
   "files": [
     "index.js",