Google SheetsとSlackを使った自動タスクアラートと日次サマリー

• •Slack Bot Token または Webhook URL
• •Google Sheets API認証情報

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      "name": "開始: Cronトリガー",
      "type": "n8n-nodes-base.cron",
      "notes": "Runs every 15 minutes to check tasks in Google Sheets.",
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        "sheetName": {
          "__rl": true,
          "mode": "id",
          "value": "={{ SHEET_TAB }}"
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        "documentId": {
          "__rl": true,
          "mode": "id",
          "value": "={{{GOOGLE_SHEET_WORKSHEET}}}"
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      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "GOOGLE_SHEET_ID",
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          "dateTime": [
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          "mode": "id",
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        "valueToMatchOn": "={{ $json[\"Task ID\"] }}",
        "columnToMatchOn": "Task ID"
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      "credentials": {
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          "id": "GOOGLE_SHEET_ID",
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      "name": "日次サマリートリガー",
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        "options": {},
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/{{GOOGLE_SHEET_ID}}/edit#gid=0",
          "cachedResultName": "Tasks"
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          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/{{GOOGLE_SHEET_ID}}/edit?usp=drivesdk",
          "cachedResultName": "Productivity & Time Tracking Sheet"
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      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "GOOGLE_SHEET_ID",
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      "name": "Slackリマインダーを送信",
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      "webhookId": "f775ed72-9f3a-4ffc-bdfc-ba464037cdb1",
      "parameters": {
        "text": "=⚡ Reminder: Task *{{$json[\"Task Name\"]}}* is due at {{$json[\"Due Date\"]}}.|Reason: {{$json[\"Why it matters\"]}}",
        "select": "channel",
        "otherOptions": {}
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      "credentials": {
        "slackApi": {
          "id": "SLACK_ID",
          "name": "YOUR_SLACK"
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      "name": "Slackリマインダー1を送信",
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      "parameters": {
        "text": "=📊 Daily Recap:\nCompleted tasks today: {{ ($json[\"Status\"] || \"\").match(/Completed/g)?.length || 0 }}\nPending tasks: {{ ($json[\"Status\"] || \"\").match(/In Progress|Not Started/g)?.length || 0 }}",
        "select": "channel",
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      "credentials": {
        "slackApi": {
          "id": "SLACK_ID",
          "name": "YOUR_SLACK"
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        "content": "# 📝 Rize Lite – Google Sheets + Slack Productivity Tracker\n\n## ⚙️ Workflow Setup\n\n### Google Sheets\n1. Create a Google Sheet with two tabs:\n   - **Tasks** (main tracker)\n     | Task ID | Task Name | Assigned To | Start Time | End Time | Duration (mins) | Due Date | Status | Last Reminder Sent | Why it matters |\n   - **Reflections** (optional daily logs)\n     | Date | Productivity Score | Focus Rating (1–10) | Completed Tasks | Overdue Tasks | Notes |\n\n2. Fill in tasks with:\n   - `Task ID`: unique identifier (e.g., 1, 2, 3…).\n   - `Due Date`: in `yyyy-MM-dd HH:mm` format.\n   - `Status`: `Not Started`, `In Progress`, or `Completed`.\n   - `Why it matters`: short motivation/goal behind the task.\n\n### Slack\n- Connect your Slack workspace to n8n.\n- Set the target channel where reminders and recaps will be sent.\n- Replace `{{SLACK_CHANNEL}}` with your channel name or ID.\n\n### n8n Workflow\n- **Start: Cron Trigger** → runs every 15 minutes to check upcoming tasks.\n- **Fetch Tasks from Google Sheets** → pulls tasks list from the `Tasks` sheet.\n- **Check Task Deadlines (IF Node)** → identifies tasks due in the next 30 minutes.\n- **Send a Slack Reminder** → posts reminders with task name, due date, and reason.\n- **Update Last Reminder Sent** → stamps the timestamp to avoid duplicate pings.\n- **Daily Recap Trigger (Cron)** → runs daily at 6 PM.\n- **Fetch Completed Tasks** → pulls updated tasks from the sheet.\n- **Send Daily Recap (Slack)** → posts a daily summary with completed vs pending tasks.\n\n---\n\n## ✅ Benefits\n\n- **Zero-Cost Productivity System**  \n  Replaces paid tools like Rize using only free tools (Sheets + Slack + n8n).\n\n- **Simple Setup, Powerful Results**  \n  Google Sheets acts as the database, while Slack is the notification interface.\n\n- **Stay on Track**  \n  Automated reminders prevent missed deadlines and encourage task focus.\n\n- **Accountability**  \n  Daily recaps summarize progress, making it easier to reflect and improve.\n\n- **Customizable**  \n  Add weekly reviews, focus scores, or AI summaries without changing core logic.\n\n- **Team-Friendly**  \n  Expand to multiple users: each task assigned to a person can send them reminders individually.\n\n---\n\n## 📌 Use Cases\n\n- **Solo Productivity** → Stay consistent, track tasks, and build focus habits.  \n- **Team Task Tracking** → Assign tasks in Google Sheets, reminders go to Slack channels.  \n- **Project Management Lite** → No heavy SaaS tools, just Sheets + Slack automation.  \n- **Self-Reflection & Growth** → Daily logs show trends, strengths, and areas for improvement.  \n"
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