diff --git a/grafana/alerts/demeter/kupo.json b/grafana/alerts/demeter/kupo.json
index 09a958a..22cf033 100644
--- a/grafana/alerts/demeter/kupo.json
+++ b/grafana/alerts/demeter/kupo.json
@@ -624,6 +624,130 @@
                     "notification_settings": {
                         "receiver": "#infra-alerts"
                     }
+                },
+                {
+                    "uid": "bkl0kupockpstale",
+                    "title": "Kupo checkpoint is stale",
+                    "condition": "C",
+                    "for": "10m",
+                    "data": [
+                        {
+                            "refId": "A",
+                            "relativeTimeRange": {
+                                "from": 900,
+                                "to": 0
+                            },
+                            "datasourceUid": "${datasource_uid_map.gke_blinklabs-demeter_us-central1_dmtr-cluster-prometheus}",
+                            "model": {
+                                "datasource": {
+                                    "type": "prometheus",
+                                    "uid": "${datasource_uid_map.gke_blinklabs-demeter_us-central1_dmtr-cluster-prometheus}"
+                                },
+                                "editorMode": "code",
+                                "expr": "changes(kupo_most_recent_checkpoint[15m]) and on (pod) (kupo_connection_status == 1)",
+                                "instant": true,
+                                "intervalMs": 1000,
+                                "legendFormat": "__auto",
+                                "maxDataPoints": 43200,
+                                "range": false,
+                                "refId": "A"
+                            }
+                        },
+                        {
+                            "refId": "B",
+                            "relativeTimeRange": {
+                                "from": 0,
+                                "to": 0
+                            },
+                            "datasourceUid": "__expr__",
+                            "model": {
+                                "conditions": [
+                                    {
+                                        "evaluator": {
+                                            "params": [
+                                                0,
+                                                0
+                                            ],
+                                            "type": "gt"
+                                        },
+                                        "operator": {
+                                            "type": "and"
+                                        },
+                                        "query": {
+                                            "params": []
+                                        },
+                                        "reducer": {
+                                            "params": [],
+                                            "type": "last"
+                                        },
+                                        "type": "query"
+                                    }
+                                ],
+                                "datasource": {
+                                    "name": "Expression",
+                                    "type": "__expr__",
+                                    "uid": "__expr__"
+                                },
+                                "expression": "A",
+                                "hide": false,
+                                "reducer": "last",
+                                "refId": "B",
+                                "type": "reduce"
+                            }
+                        },
+                        {
+                            "refId": "C",
+                            "relativeTimeRange": {
+                                "from": 0,
+                                "to": 0
+                            },
+                            "datasourceUid": "__expr__",
+                            "model": {
+                                "conditions": [
+                                    {
+                                        "evaluator": {
+                                            "params": [
+                                                1,
+                                                0
+                                            ],
+                                            "type": "lt"
+                                        },
+                                        "operator": {
+                                            "type": "and"
+                                        },
+                                        "query": {
+                                            "params": []
+                                        },
+                                        "reducer": {
+                                            "params": [],
+                                            "type": "avg"
+                                        },
+                                        "type": "query"
+                                    }
+                                ],
+                                "datasource": {
+                                    "name": "Expression",
+                                    "type": "__expr__",
+                                    "uid": "__expr__"
+                                },
+                                "expression": "B",
+                                "hide": false,
+                                "refId": "C",
+                                "type": "threshold"
+                            }
+                        }
+                    ],
+                    "noDataState": "OK",
+                    "execErrState": "KeepLast",
+                    "annotations": {
+                        "description": "A Kupo instance is connected to its node backend but its most recent checkpoint (kupo_most_recent_checkpoint) has not advanced for at least 15 minutes, meaning it is serving a stale index to clients. This usually indicates a wedged chain-sync session that a pod restart will clear.",
+                        "summary": "{{ range $k, $v := $values -}}\n{{ if (match \"C[0-9]+\" $k) -}}\nPod: {{ $v.Labels.pod }} checkpoint is not advancing\n{{ end }}\n{{ end }}"
+                    },
+                    "labels": {},
+                    "isPaused": false,
+                    "notification_settings": {
+                        "receiver": "#infra-alerts"
+                    }
                 }
             ]
         }
diff --git a/grafana/dashboards/shared/kupo.json b/grafana/dashboards/shared/kupo.json
index a53bda2..5ca5881 100644
--- a/grafana/dashboards/shared/kupo.json
+++ b/grafana/dashboards/shared/kupo.json
@@ -1129,6 +1129,109 @@
           ],
           "title": "Container Restarts",
           "type": "state-timeline"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$datasource"
+          },
+          "description": "Number of times each Kupo instance's most recent checkpoint (kupo_most_recent_checkpoint) advanced in the last 15 minutes. A healthy, synced instance advances continuously; a value of 0 means the checkpoint is frozen (wedged chain-sync) and the pod is serving a stale index. This is the signal behind the \"Kupo checkpoint is stale\" alert.",
+          "fieldConfig": {
+            "defaults": {
+              "color": {
+                "mode": "thresholds"
+              },
+              "custom": {
+                "axisBorderShow": false,
+                "axisCenteredZero": false,
+                "axisColorMode": "text",
+                "axisLabel": "checkpoint changes / 15m",
+                "axisPlacement": "auto",
+                "barAlignment": 0,
+                "barWidthFactor": 0.6,
+                "drawStyle": "line",
+                "fillOpacity": 10,
+                "gradientMode": "none",
+                "hideFrom": {
+                  "legend": false,
+                  "tooltip": false,
+                  "viz": false
+                },
+                "insertNulls": false,
+                "lineInterpolation": "linear",
+                "lineWidth": 2,
+                "pointSize": 5,
+                "scaleDistribution": {
+                  "type": "linear"
+                },
+                "showPoints": "auto",
+                "spanNulls": false,
+                "stacking": {
+                  "group": "A",
+                  "mode": "none"
+                },
+                "thresholdsStyle": {
+                  "mode": "off"
+                }
+              },
+              "mappings": [],
+              "min": 0,
+              "thresholds": {
+                "mode": "absolute",
+                "steps": [
+                  {
+                    "color": "red",
+                    "value": 0
+                  },
+                  {
+                    "color": "green",
+                    "value": 1
+                  }
+                ]
+              },
+              "unit": "short"
+            },
+            "overrides": []
+          },
+          "gridPos": {
+            "h": 8,
+            "w": 24,
+            "x": 0,
+            "y": 50
+          },
+          "id": 30,
+          "options": {
+            "legend": {
+              "calcs": [
+                "lastNotNull",
+                "min"
+              ],
+              "displayMode": "table",
+              "placement": "bottom",
+              "showLegend": true
+            },
+            "tooltip": {
+              "hideZeros": false,
+              "mode": "multi",
+              "sort": "asc"
+            }
+          },
+          "pluginVersion": "13.1.0-25668120414",
+          "targets": [
+            {
+              "datasource": {
+                "type": "prometheus",
+                "uid": "$datasource"
+              },
+              "editorMode": "code",
+              "expr": "changes(kupo_most_recent_checkpoint{pod=~\".*$pod.*\"}[15m]) and on (pod) (kupo_connection_status{pod=~\".*$pod.*\"} == 1)",
+              "legendFormat": "{{pod}}",
+              "range": true,
+              "refId": "A"
+            }
+          ],
+          "title": "Checkpoint Advancement (changes / 15m)",
+          "type": "timeseries"
         }
       ],
       "title": "Instances",