n8n Silent Workflow Check.json

{
  "name": "n8n Silent Workflow Check",
  "id": "duskwatchSilentCheck",
  "nodes": [
    {
      "parameters": {
        "content": "## Silent workflow check\n\nFinds workflows that are **active but have not run** — the failure mode that produces no failed execution and therefore no error workflow alert.\n\n### Setup (2 minutes)\n1. In n8n: **Settings → n8n API → Create an API key**.\n2. On **Get workflows**, create a *Header Auth* credential:\n   - Name: `X-N8N-API-KEY`\n   - Value: your API key\n   Reuse the same credential on **Get executions**.\n3. In **Configuration**, set `baseUrl` to your n8n address (no trailing slash) and `staleHours` to how long silence is still normal.\n4. Attach your own alert node after **Find silent workflows**.\n\n### The catch\nThis workflow lives inside the instance it watches. If that instance is down, restarting, or its\nschedule triggers did not re-register, this check does not run either — and its silence looks\nexactly like everything being fine.\n\nThat is the one failure it cannot cover. Watching from outside is the only thing that does:\nhttps://duskwatch.me/checklist?ref=template",
        "height": 620,
        "width": 460
      },
      "id": "8f1c0a10-0000-4000-8000-000000000001",
      "name": "Read me",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -460,
        -120
      ]
    },
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 8
            }
          ]
        }
      },
      "id": "8f1c0a10-0000-4000-8000-000000000002",
      "name": "Every morning",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.2,
      "position": [
        40,
        100
      ]
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "a1",
              "name": "baseUrl",
              "value": "https://n8n.example.com",
              "type": "string"
            },
            {
              "id": "a2",
              "name": "staleHours",
              "value": 26,
              "type": "number"
            }
          ]
        },
        "options": {}
      },
      "id": "8f1c0a10-0000-4000-8000-000000000003",
      "name": "Configuration",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        260,
        100
      ]
    },
    {
      "parameters": {
        "url": "={{ $json.baseUrl }}/api/v1/workflows?limit=250",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "options": {}
      },
      "id": "8f1c0a10-0000-4000-8000-000000000004",
      "name": "Get workflows",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        480,
        100
      ]
    },
    {
      "parameters": {
        "url": "={{ $('Configuration').first().json.baseUrl }}/api/v1/executions?limit=250",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "options": {}
      },
      "id": "8f1c0a10-0000-4000-8000-000000000005",
      "name": "Get executions",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        700,
        100
      ]
    },
    {
      "parameters": {
        "jsCode": "const cfg = $('Configuration').first().json;\nconst stunden = Number(cfg.staleHours) || 24;\n\nconst workflows = ($('Get workflows').first().json.data || []).filter((w) => w.active && !w.isArchived);\nconst executions = $('Get executions').first().json.data || [];\n\n// Letzter Lauf je Workflow. Das Fenster reicht nur so weit zurueck wie limit=250 —\n// bei sehr vielen Ausfuehrungen kann ein stiller Workflow dadurch uebersehen werden.\nconst zuletzt = new Map();\nfor (const e of executions) {\n  const id = String(e.workflowId);\n  const t = new Date(e.startedAt || e.createdAt).getTime();\n  if (!Number.isFinite(t)) continue;\n  if (!zuletzt.has(id) || t > zuletzt.get(id)) zuletzt.set(id, t);\n}\n\nconst jetzt = Date.now();\nconst grenze = jetzt - stunden * 3600 * 1000;\nconst still = [];\n\nfor (const w of workflows) {\n  const t = zuletzt.get(String(w.id));\n  if (t === undefined) {\n    still.push({ workflow: w.name, workflowId: w.id, lastRun: null, hoursSilent: null, note: 'no execution in the window' });\n  } else if (t < grenze) {\n    still.push({ workflow: w.name, workflowId: w.id, lastRun: new Date(t).toISOString(), hoursSilent: Math.round((jetzt - t) / 3600000), note: 'active but stalled' });\n  }\n}\n\nif (still.length === 0) return [{ json: { silent: 0, activeChecked: workflows.length } }];\nreturn still.map((json) => ({ json }));"
      },
      "id": "8f1c0a10-0000-4000-8000-000000000006",
      "name": "Find silent workflows",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        920,
        100
      ]
    }
  ],
  "connections": {
    "Every morning": {
      "main": [
        [
          {
            "node": "Configuration",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Configuration": {
      "main": [
        [
          {
            "node": "Get workflows",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get workflows": {
      "main": [
        [
          {
            "node": "Get executions",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get executions": {
      "main": [
        [
          {
            "node": "Find silent workflows",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "pinData": {}
}