fix: Fixed an issue with MCP communication failing due to dotenv.

Author: christian-kreuzberger-dtx

.dt-mcp/token.json

@@ -0,0 +1,6 @@
+{
+  "access_token": "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCIsImtpZCI6IjEifQ.eyJzdWIiOiJiMzJiY2Y0Ni03NWU2LTRkMGQtYTg0MS02MWMyN2NmNmQ1YTYiLCJfY2xhaW1fbmFtZXMiOnsiZ3JvdXBzIjoiMCJ9LCJwcmVmZXJyZWRfdXNlcm5hbWUiOiJjaHJpc3RpYW4ua3JldXpiZXJnZXJAZHluYXRyYWNlLmNvbSIsImd0IjoiYWMiLCJpbnQiOnRydWUsImNzIjoiSDRzSUFBQUFBQUFBLzBzc0tOQk56VXZQekV1MVNpdk5TeTdKek04cnRpb3F6Vk5JUkVnQW1XQXhBTXlQWWVVc0FBQUEiLCJhdWQiOiJkdDBzMDguZHQtYXBwLWxvY2FsIiwic2NvcGUiOiIiLCJfY2xhaW1fc291cmNlcyI6eyIwIjp7ImVuZHBvaW50IjpudWxsfX0sImV4cCI6MTc1ODcxODgzMywiaWF0IjoxNzU4NzE4NTMzLCJqdGkiOiIxMTkyY2U2Yi0xYWYzLTRjODYtYjkzMi01MjFjZWQ0NDQwYjEiLCJlbWFpbCI6ImNocmlzdGlhbi5rcmV1emJlcmdlckBkeW5hdHJhY2UuY29tIn0.vP0bbMyW2i7KsUEnZltdxHhu2_EN2D0gLBTleSyVmeATI1Gn_wsRnnlk1avmFDev-JE5f1MXV_jlETwe3T0upg",
+  "refresh_token": "dt0s06.9e0479f5-6321-4066-8088-be1a6d43884f",
+  "expires_at": 1758718834936,
+  "scopes": ["app-engine:apps:run", "app-engine:functions:run"]
+}

CHANGELOG.md

@@ -1,6 +1,9 @@
 # @dynatrace-oss/dynatrace-mcp-server
 
-## Unreleased Changes
+## 0.6.1
+
+- Fixed an issue with MCP communication failing with `SyntaxError: Unexpected token 'd'` due to `dotenv`
+- Added Support for Google Gemini CLI
 
 ## 0.6.0
 

gemini-extension.json

@@ -1,6 +1,6 @@
 {
   "name": "dynatrace-mcp-server",
-  "version": "0.6.0",
+  "version": "0.6.1",
   "mcpServers": {
     "dynatrace": {
       "command": "npx",

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@dynatrace-oss/dynatrace-mcp-server",
-  "version": "0.6.0",
+  "version": "0.6.1",
   "mcpName": "io.github.dynatrace-oss/Dynatrace-mcp",
   "description": "Model Context Protocol (MCP) server for Dynatrace",
   "keywords": [

package.json

@@ -7,13 +7,13 @@
     "url": "https://github.com/dynatrace-oss/Dynatrace-mcp",
     "source": "github"
   },
-  "version": "0.6.0",
+  "version": "0.6.1",
   "packages": [
     {
       "registry_type": "npm",
       "registry_base_url": "https://registry.npmjs.org",
       "identifier": "@dynatrace-oss/dynatrace-mcp-server",
-      "version": "0.6.0",
+      "version": "0.6.1",
       "runtime_hint": "npx",
       "transport": {
         "type": "stdio"

server.json

@@ -49,7 +49,22 @@ import { Http2ServerRequest } from 'node:http2';
 import { resetGrailBudgetTracker, getGrailBudgetTracker } from './utils/grail-budget-tracker';
 import { read } from 'node:fs';
 
-config();
+// Load environment variables from .env file if available, and suppress warnings/logging to stdio
+// as it breaks MCP communication when using stdio transport
+const dotEnvOutput = config({ quiet: true });
+
+if (dotEnvOutput.error) {
+  // Only log error if it's not about missing .env file
+  if ((dotEnvOutput.error as NodeJS.ErrnoException).code !== 'ENOENT') {
+    console.error('Error loading .env file:', dotEnvOutput.error);
+    process.exit(1);
+  }
+} else {
+  // Successfully loaded .env file
+  console.error(
+    `.env file loaded successfully - loaded ${dotEnvOutput.parsed ? Object.keys(dotEnvOutput.parsed).length : 0} environment variables: ${Object.keys(dotEnvOutput.parsed || {}).join(', ')}`,
+  );
+}
 
 let scopesBase = [
   'app-engine:apps:run', // needed for environmentInformationClient