diff --git a/.env.example b/.env.example
index ed43d86..11b682f 100644
--- a/.env.example
+++ b/.env.example
@@ -7,3 +7,7 @@ TLS=false
 TLS_KEY=
 TLS_CERT=
 JWT_SECRET_KEY=your_secret_key
+
+# Prometheus metrics endpoint
+# Set this to access the monitoring endpoint at /metrics
+# METRICS_TOKEN=
diff --git a/package-lock.json b/package-lock.json
index ea8cae1..b979909 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,10 +23,12 @@
         "jsonwebtoken": "^9.0.2",
         "lodash": "^4.17.21",
         "node-fetch": "^3.3.2",
+        "prom-client": "^14.2.0",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "socket.io": "^4.7.5",
         "socket.io-client": "^4.7.5",
+        "socket.io-prometheus": "^0.3.0",
         "vue": "^2.7.14"
       },
       "devDependencies": {
@@ -3122,6 +3124,12 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/bintrees": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bintrees/-/bintrees-1.0.2.tgz",
+      "integrity": "sha512-VOMgTMwjAaUG580SXn3LacVgjurrbMme7ZZNYGSSV7mmtY6QQRh0Eg3pwIcntQ77DErK1L0NxkbetjcoXzVwKw==",
+      "license": "MIT"
+    },
     "node_modules/bn.js": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
@@ -8418,6 +8426,18 @@
       "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
+    "node_modules/prom-client": {
+      "version": "14.2.0",
+      "resolved": "https://registry.npmjs.org/prom-client/-/prom-client-14.2.0.tgz",
+      "integrity": "sha512-sF308EhTenb/pDRPakm+WgiN+VdM/T1RaHj1x+MvAuT8UiQP8JmOEbxVqtkbfR4LrvOg5n7ic01kRBDGXjYikA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tdigest": "^0.1.1"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -9305,6 +9325,15 @@
         "node": ">=10.0.0"
       }
     },
+    "node_modules/socket.io-prometheus": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/socket.io-prometheus/-/socket.io-prometheus-0.3.0.tgz",
+      "integrity": "sha512-ERrHtTizVy/buZDMCAcrFD1WZJHM01B6t3OwkV+abQGCNj86+UlRLwvAfxLK+HP3/qqYrWNk9W3vywYYsRe09w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "prom-client": ">=10 <15"
+      }
+    },
     "node_modules/source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -10028,6 +10057,15 @@
         "node": ">=6"
       }
     },
+    "node_modules/tdigest": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/tdigest/-/tdigest-0.1.2.tgz",
+      "integrity": "sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==",
+      "license": "MIT",
+      "dependencies": {
+        "bintrees": "1.0.2"
+      }
+    },
     "node_modules/text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
diff --git a/package.json b/package.json
index 5379e01..9ffb3df 100644
--- a/package.json
+++ b/package.json
@@ -31,10 +31,12 @@
     "jsonwebtoken": "^9.0.2",
     "lodash": "^4.17.21",
     "node-fetch": "^3.3.2",
+    "prom-client": "^14.2.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "socket.io": "^4.7.5",
     "socket.io-client": "^4.7.5",
+    "socket.io-prometheus": "^0.3.0",
     "vue": "^2.7.14"
   },
   "devDependencies": {
diff --git a/websocket_server/app.js b/websocket_server/app.js
index 9666b9f..9fda32a 100644
--- a/websocket_server/app.js
+++ b/websocket_server/app.js
@@ -4,6 +4,9 @@
  */
 
 import express from 'express'
+import { register } from 'prom-client'
+
+const METRICS_TOKEN = process.env.METRICS_TOKEN
 
 const app = express()
 
@@ -11,4 +14,14 @@ app.get('/', (req, res) => {
 	res.send('Excalidraw collaboration server is up :)')
 })
 
+app.get('/metrics', async (req, res) => {
+	const token = req.headers.authorization?.split(' ')[1] || req.query.token
+	if (!METRICS_TOKEN || token !== METRICS_TOKEN) {
+		return res.status(403).send('Unauthorized')
+	}
+	const metrics = await register.metrics()
+	res.set('Content-Type', register.contentType)
+	res.end(metrics)
+})
+
 export default app
diff --git a/websocket_server/socket.js b/websocket_server/socket.js
index a8f7664..8c831e0 100644
--- a/websocket_server/socket.js
+++ b/websocket_server/socket.js
@@ -6,6 +6,7 @@
  */
 
 import { Server as SocketIO } from 'socket.io'
+import prometheusMetrics from 'socket.io-prometheus'
 import jwt from 'jsonwebtoken'
 import { getRoomDataFromFile, roomDataStore, saveRoomDataToFile } from './roomData.js'
 import { convertArrayBufferToString, convertStringToArrayBuffer } from './utils.js'
@@ -42,6 +43,8 @@ export const initSocket = (server) => {
 
 	io.use(socketAuthenticateHandler)
 
+	prometheusMetrics(io)
+
 	io.on('connection', (socket) => {
 		setupSocketEvents(socket, io)
 	})