Slng - End Call to Notion and Slack

The workflow JSON

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{
  "name": "SLNG - End Call to Notion and Slack",
  "nodes": [
    {
      "parameters": {
        "content": "Logs ended SLNG voice-agent calls. Replace YOUR_AGENT_ID, YOUR_NOTION_DATABASE_ID, and YOUR_SLACK_CHANNEL_ID, then assign SLNG, Notion, and Slack credentials.",
        "height": 180,
        "width": 420,
        "color": 4
      },
      "id": "3f6ac7e7-6bb6-4b2e-9047-c910f24670e1",
      "name": "Setup Notes",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -700,
        -260
      ]
    },
    {
      "parameters": {
        "agentId": {
          "__rl": true,
          "mode": "id",
          "value": "YOUR_AGENT_ID"
        },
        "toolName": "log_call_end",
        "toolDescription": "Log call transcript and outcome when a call ends.",
        "toolType": "system",
        "advancedSettings": true,
        "systemTriggers": {
          "trigger": [
            {
              "event": "call_end"
            }
          ]
        },
        "systemArguments": {
          "argument": [
            {
              "name": "call_id",
              "type": "string",
              "sourceType": "call_id",
              "required": true
            },
            {
              "name": "phone_number",
              "type": "string",
              "sourceType": "phone_number"
            },
            {
              "name": "call_end_reason",
              "type": "string",
              "sourceType": "call_end_reason"
            },
            {
              "name": "transcript",
              "type": "transcript_messages",
              "sourceType": "transcript_messages",
              "sourceMaxMessages": 200
            }
          ]
        },
        "responseMode": "onReceived",
        "options": {
          "webhookFormat": "envelope",
          "waitForResponse": false,
          "showResultsToLlm": false
        }
      },
      "id": "69d6ff07-616a-43f0-823d-01dbf46b5cc3",
      "name": "SLNG Call End",
      "type": "n8n-nodes-slng.slngTrigger",
      "typeVersion": 1,
      "position": [
        -520,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "const args = $json.toolArguments || {};\nconst transcript = Array.isArray(args.transcript) ? args.transcript : [];\nconst lines = transcript.map((m) => `${m.role || m.speaker || 'speaker'}: ${m.text || m.content || ''}`.trim()).filter(Boolean);\nconst summary = lines.slice(-12).join('\\n') || 'No transcript messages were provided.';\nreturn [{ json: { callId: args.call_id || $json.call_id || 'unknown-call', phoneNumber: args.phone_number || 'unknown', endReason: args.call_end_reason || 'unknown', transcriptText: lines.join('\\n'), shortSummary: summary } }];"
      },
      "id": "7bd4c871-c8f2-4ba3-8dc9-e7551e40b3dd",
      "name": "Prepare Call Log",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -260,
        0
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://api.notion.com/v1/pages",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Notion-Version",
              "value": "2022-06-28"
            }
          ]
        },
        "sendBody": true,
        "contentType": "json",
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ parent: { database_id: 'YOUR_NOTION_DATABASE_ID' }, properties: { Name: { title: [{ text: { content: `Call ${$json.callId}` } }] }, Phone: { rich_text: [{ text: { content: $json.phoneNumber } }] }, Status: { select: { name: $json.endReason } } }, children: [{ object: 'block', type: 'paragraph', paragraph: { rich_text: [{ text: { content: $json.shortSummary.slice(0, 1900) } }] } }] }) }}"
      },
      "id": "345c3393-a215-495a-b278-df0057ac0af0",
      "name": "Create Notion Call Page",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        20,
        0
      ]
    },
    {
      "parameters": {
        "resource": "message",
        "operation": "post",
        "channelId": "YOUR_SLACK_CHANNEL_ID",
        "text": "=SLNG call ended\\nCall: {{$node[\"Prepare Call Log\"].json.callId}}\\nPhone: {{$node[\"Prepare Call Log\"].json.phoneNumber}}\\nReason: {{$node[\"Prepare Call Log\"].json.endReason}}\\n\\n{{$node[\"Prepare Call Log\"].json.shortSummary}}",
        "otherOptions": {}
      },
      "id": "3c47c54c-0ffe-4540-b59d-b9c4b0a9d032",
      "name": "Post Slack Summary",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.2,
      "position": [
        300,
        0
      ]
    }
  ],
  "connections": {
    "SLNG Call End": {
      "main": [
        [
          {
            "node": "Prepare Call Log",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare Call Log": {
      "main": [
        [
          {
            "node": "Create Notion Call Page",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Create Notion Call Page": {
      "main": [
        [
          {
            "node": "Post Slack Summary",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": []
}

About this workflow

SLNG - End Call to Notion and Slack. Uses n8n-nodes-slng, httpRequest, slack. Event-driven trigger; 5 nodes.

Source: https://github.com/slng-ai/n8n-nodes-slng/blob/5c119f66ae73fe3ef4e79366b659d4691c93583d/templates/end-call-notion-slack.workflow.json — original creator credit. Request a take-down →

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