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Daily Google Tasks Briefing in Slack with Ollama-Powered Summaries

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Created by: Axiomlab.dev || axiomlab

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Last update 5 days ago

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Tasks Briefing

This template posts a clean, Slack-ready morning summary of your Google Tasks due today. It fetches tasks, filters only those due “today” in your timezone, asks a local LLM (via LangChain + Ollama) to produce a short summary (no steps, just a concise brief), strips any hidden <think> blocks, and delivers the message to your chosen Slack channel.

How it works

  1. Trigger at Morning (Cron) – runs at 7:00 AM (you can change the hour) to kick things off daily.

  2. Get many tasks (Google Tasks node) – pulls tasks from your selected Google Tasklist.

  3. Code (Filter Due Today) – normalizes dates to your timezone, keeps only tasks due today, and emits a fallback flag if none exist.

  4. If – routes:

    • True (has tasks) → continues to the LLM summary path.
    • False (no tasks) → sends a “No tasks due today” message to Slack.

  5. Code (Build LLM Prompt) – builds a compact, Markdown-only prompt for the model (no tool calls).

  6. Basic LLM Chain (LangChain) + Ollama Model – generates a short summary for Slack.

  7. Code (Cleanup) – removes any <think>…</think> content if the model includes it.

  8. Send a message (Slack) – posts the final brief to your Slack channel.

Required credentials

  • Google Tasks OAuth2 API – to read tasks from your Google Tasklist.
  • Slack API – to post the summary into a channel.
  • Ollama – local model endpoint (e.g., qwen3:4b); used by the LangChain LLM nodes.

Setup Instructions

  1. Google Tasks credential

    • In Google Cloud Console: enable Google Tasks API, create an OAuth Client (Web), and set the redirect URI shown by n8n.

    • In n8n Credentials, add Google Tasks OAuth2 API with scope:

      • https://www.googleapis.com/auth/tasks (read/write) or
      • https://www.googleapis.com/auth/tasks.readonly (read-only).

    • In the Get many tasks node, select your credential and your Tasklist.

  2. Slack credential & channel

    • In n8n Credentials, add Slack API (bot/user token with chat:write).
    • In Send a message nodes, select your Slack credential and set the Channel (e.g., #new-leads).

  3. Ollama model (LangChain)

    • Ensure Ollama is running on your host (default http://localhost:11434).
    • Pull a model (e.g., ollama pull qwen3:4b) or use another supported model (llama3:8b, etc.).
    • In Ollama Model node, select your Ollama credential and set the model name to match what you pulled.

  4. Timezone & schedule

    • The Cron node is set to 7:00 AM. Adjust as needed.
    • The Code (Filter Due Today) node is configured for Asia/Dhaka; change the TZ constant if you prefer a different timezone.

  5. (Optional) Cleanup safety

    • The template includes a Code (Cleanup) node that strips <think>…</think> blocks from model output. Keep this connected before the Slack node.

  6. Test the flow

    • Run the workflow once manually:

      • If you have tasks due today, you should see a concise summary posted to your Slack channel.
      • If none are due, you’ll receive a friendly “No tasks due today” message.

  7. Activate

    • When everything looks good, toggle the workflow Active to receive the daily summary automatically.