Backbrief: Error Trap

The workflow JSON

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{
  "backbrief_skeleton_version": "0.1.0",
  "name": "Backbrief: error trap",
  "nodes": [
    {
      "id": "bb-error-trigger",
      "name": "Error Trigger",
      "type": "n8n-nodes-base.errorTrigger",
      "typeVersion": 1,
      "position": [
        240,
        300
      ],
      "parameters": {}
    },
    {
      "id": "bb-format-error-dm",
      "name": "Format error DM",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        460,
        300
      ],
      "parameters": {
        "jsCode": "// Error trap \u2014 format an unhandled workflow failure into an owner DM.\n// Error Trigger payload: { execution: {id, url, error, lastNodeExecuted, mode}, workflow: {id, name} }\nconst j = $input.first().json;\nconst ex = j.execution || {};\nconst wfMeta = j.workflow || {};\nconst err = ex.error || {};\nconst lines = [\n  ':rotating_light: *Unhandled pipeline failure* (error trap)',\n  '*Workflow:* ' + (wfMeta.name || wfMeta.id || '?'),\n  '*Execution:* `' + (ex.id || '?') + '`' + (ex.url ? ' \u2014 ' + ex.url : ''),\n  '*Last node:* `' + (ex.lastNodeExecuted || (err.node && err.node.name) || '?') + '`',\n  '',\n  '*Error:*',\n  '\\`\\`\\`',\n  String(err.message || JSON.stringify(err).slice(0, 600) || 'no message').slice(0, 900),\n  '\\`\\`\\`',\n  '',\n  '_Check n8n executions; if a transcript call \u2014 the durable DLQ entry (the dlq/ folder in the vault repo) + plugin/scripts/redrive-dlq.js can recover the artifact._',\n];\nreturn [{ json: { dm_text: lines.join('\\n') } }];"
      }
    },
    {
      "id": "bb-dm-owner-error-trap",
      "name": "DM owner (error trap)",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.2,
      "position": [
        680,
        300
      ],
      "parameters": {
        "resource": "message",
        "operation": "post",
        "select": "user",
        "user": "__BACKBRIEF_OWNER_SLACK_USER_ID__",
        "text": "={{ $json.dm_text }}",
        "otherOptions": {
          "includeLinkToWorkflow": false
        }
      },
      "credentials": {
        "slackApi": {
          "name": "<your credential>"
        }
      },
      "retryOnFail": true,
      "maxTries": 3,
      "waitBetweenTries": 3000
    }
  ],
  "connections": {
    "Error Trigger": {
      "main": [
        [
          {
            "node": "Format error DM",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format error DM": {
      "main": [
        [
          {
            "node": "DM owner (error trap)",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {}
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• slackApi

About this workflow

Backbrief: error trap. Uses errorTrigger, slack. Event-driven trigger; 3 nodes.

Source: https://github.com/EvgenSmith/backbrief/blob/main/pipeline/workflows/error-trap.json — original creator credit. Request a take-down →

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