diff --git a/json_exporter.example.yml b/json_exporter.example.yml
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+# Prometheus Community JSON Exporter Configuration Example
+# File: json_exporter.example.yml
+#
+# Use this configuration to map KoalaSync admin health metrics (JSON)
+# to native Prometheus metrics.
+#
+# Usage:
+# 1. Rename this file to json_exporter.yml
+# 2. Replace "YOUR_ADMIN_METRICS_TOKEN" with your actual ADMIN_METRICS_TOKEN env value
+# 3. Mount it to the json-exporter docker container: /config.yml
+
+modules:
+  koalasync:
+    http_client_config:
+      bearer_token: "YOUR_ADMIN_METRICS_TOKEN"
+    metrics:
+      - name: koalasync_uptime_seconds
+        type: gauge
+        path: '{.uptime}'
+        help: "Uptime of the KoalaSync relay server in seconds"
+
+      - name: koalasync_rooms
+        type: gauge
+        path: '{.rooms}'
+        help: "Total active rooms"
+
+      - name: koalasync_connections
+        type: gauge
+        path: '{.connections}'
+        help: "Total active socket connections (sockets)"
+
+      - name: koalasync_peers
+        type: gauge
+        path: '{.peers}'
+        help: "Total connected peers across all rooms"
+
+      - name: koalasync_rooms_with_lobby
+        type: gauge
+        path: '{.roomsWithLobby}'
+        help: "Number of rooms waiting in an episode lobby"
+
+      - name: koalasync_avg_peers_per_room
+        type: gauge
+        path: '{.avgPeersPerRoom}'
+        help: "Average number of peers per room"
+
+      - name: koalasync_max_peers_in_room
+        type: gauge
+        path: '{.maxPeersInRoom}'
+        help: "Maximum number of peers in a single room"
+
+      - name: koalasync_memory_rss_bytes
+        type: gauge
+        path: '{.memory.rss}'
+        help: "Resident Set Size (RSS) memory usage in bytes"
+
+      - name: koalasync_memory_heap_used_bytes
+        type: gauge
+        path: '{.memory.heapUsed}'
+        help: "V8 engine heap used in bytes"
+
+      - name: koalasync_memory_heap_total_bytes
+        type: gauge
+        path: '{.memory.heapTotal}'
+        help: "V8 engine heap total in bytes"
+
+      - name: koalasync_rate_limit_connections
+        type: gauge
+        path: '{.rateLimitEntries.connections}'
+        help: "Number of entries tracked in the connection rate limiter"
+
+      - name: koalasync_rate_limit_events
+        type: gauge
+        path: '{.rateLimitEntries.events}'
+        help: "Number of entries in the event rate limiter"
+
+      - name: koalasync_rate_limit_health
+        type: gauge
+        path: '{.rateLimitEntries.health}'
+        help: "Number of entries in the health rate limiter"
+
+      - name: koalasync_rate_limit_admin_metrics_auth
+        type: gauge
+        path: '{.rateLimitEntries.adminMetricsAuth}'
+        help: "Number of entries in the admin metrics auth rate limiter"
+
+      - name: koalasync_rate_limit_auth_failures
+        type: gauge
+        path: '{.rateLimitEntries.authFailures}'
+        help: "Number of entries in the authentication failures cache"
+
+      - name: koalasync_rate_limit_room_list
+        type: gauge
+        path: '{.rateLimitEntries.roomList}'
+        help: "Number of entries in the room list cooldown cache"