diff --git a/server/index.js b/server/index.js
index bf0e504..21442c1 100644
--- a/server/index.js
+++ b/server/index.js
@@ -6,8 +6,8 @@ const http = require('http');
 const { randomUUID } = require('crypto');
 require('dotenv').config();
 
-// Prevent HTTP parser errors (e.g. from keep-alive connections to monitored
-// services that send data after Connection: close) from crashing the process.
+// Prevent HTTP parser errors (e.g. "Data after Connection: close") and other
+// transient async errors from crashing the process.
 process.on('uncaughtException', (err) => {
   if (err.code === 'HPE_INVALID_CONSTANT' || (err.message && err.message.includes('Parse Error'))) {
     console.error('HTTP parse error (swallowed):', err.message);
@@ -17,6 +17,15 @@ process.on('uncaughtException', (err) => {
   process.exit(1);
 });
 
+process.on('unhandledRejection', (reason) => {
+  const msg = reason instanceof Error ? reason.message : String(reason);
+  if (msg.includes('Parse Error')) {
+    console.error('HTTP parse error (swallowed):', msg);
+    return;
+  }
+  console.error('Unhandled rejection:', reason);
+});
+
 const db = require('./database');
 const scheduler = require('./scheduler');
 const monitorService = require('./monitorService');
diff --git a/server/monitorService.js b/server/monitorService.js
index ec044a5..f840a1f 100644
--- a/server/monitorService.js
+++ b/server/monitorService.js
@@ -31,14 +31,14 @@ function parseHostPort(urlString, fallbackPort) {
 
 class MonitorService {
   constructor() {
-    // Keep-alive agents for pooled HTTP/S connections.
-    // Socket-level 'error' listener prevents parse errors (e.g. "Data after
-    // Connection: close") from bubbling up as uncaught exceptions when a
-    // monitored server sends a malformed response on a reused connection.
-    this.httpAgent = new http.Agent({ keepAlive: true, maxSockets: 50 });
-    this.httpAgent.on('error', () => {});
-    this.httpsAgent = new https.Agent({ keepAlive: true, maxSockets: 50 });
-    this.httpsAgent.on('error', () => {});
+    // Disable keep-alive to avoid "Parse Error: Data after Connection: close"
+    // crashes. Keep-alive connection reuse causes the HTTP parser to throw
+    // when a monitored server sends extra data after Connection: close — the
+    // socket-level error becomes an uncaught exception that kills the process.
+    // Monitoring checks are infrequent enough that connection pooling provides
+    // no meaningful benefit.
+    this.httpAgent = new http.Agent({ keepAlive: false });
+    this.httpsAgent = new https.Agent({ keepAlive: false });
     
     // Circuit breaker for HTTP checks (5 failures before opening, 60s reset)
     this.httpCircuitBreaker = new CircuitBreaker(5, 60000, this.isTransientError);