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Daily news aggregation with Perplexity AI & MongoDB storage

Samuel HerediaSamuel Heredia
886 views
2/3/2026
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This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

Workflow: Daily News Aggregator & MongoDB Storage

This workflow is designed to run seamlessly in the background, automating the full cycle of news aggregation, storage, and reporting with precision and reliability.

  1. Daily Trigger (Cron Node) The process kicks off every morning at 8:00 AM UTC. This scheduling ensures that fresh global news is captured consistently at the start of each day.

  2. Perplexity Node At the heart of the workflow, a Perplexity node queries the latest global news. The prompt specifies both the type of news and the JSON structure required, guaranteeing the output is ready for structured storage. The result is a clean feed of headlines, timestamps, sources, and URLs.

  3. Data Formatting (Code Node) Since Perplexity’s response is a string, the workflow includes a custom JavaScript function to clean and parse it into a valid JSON array. Each news item is then transformed into its own object, ready for iteration.

  4. MongoDB Insertion (Loop Node) Each news article is inserted into the daily_news collection in MongoDB. The workflow ensures that fields such as headline, timestamp, source, URL, and category are stored neatly, with additional metadata available for future filtering and analysis.

  5. Aggregation & Notification Prep (Code Node) Once all items are stored, the workflow aggregates the day’s results. This step prepares a digest of what was successfully processed, ensuring visibility into the pipeline’s performance.

  6. Email Notification (Gmail Node) Finally, a summary email is sent via Gmail. This message confirms the operation’s success and provides a quick snapshot of the news collected and stored that day.

Workflow Flow

Cron Trigger → Perplexity API → Format Data → MongoDB Insert → Aggregate Results → Send Email Notification

This setup transforms what could be a manual, repetitive task into a streamlined daily routine. It not only guarantees timely and structured storage of news but also provides immediate confirmation, making it an elegant solution for automated information management.

Daily News Aggregation with Perplexity AI and MongoDB Storage

This n8n workflow automates the process of aggregating daily news, summarizing it using Perplexity AI, and storing the summaries in MongoDB. It also sends a daily email digest of the aggregated news.

What it does

  1. Triggers Daily: The workflow is scheduled to run at a specific time each day.
  2. Aggregates News: (Implicit from the workflow name and Perplexity node presence - details of news source are not in the provided JSON but are expected for a complete workflow).
  3. Summarizes with Perplexity AI: Each aggregated news item is processed by Perplexity AI to generate a concise summary.
  4. Stores in MongoDB: The summarized news articles are then stored in a MongoDB database for persistent storage.
  5. Loops Over Items: The workflow uses a "Loop Over Items" node to process multiple news articles efficiently, ensuring each one is summarized and stored.
  6. Sends Email Digest: Finally, it compiles the daily news summaries and sends them as an email digest via Gmail.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • Perplexity AI API Key: An API key for Perplexity AI to utilize its summarization capabilities.
  • MongoDB Account/Instance: Access to a MongoDB database to store the news summaries.
  • Gmail Account: A configured Gmail credential in n8n to send email digests.

Setup/Usage

  1. Import the Workflow: Import the provided JSON into your n8n instance.
  2. Configure Credentials:
    • Perplexity: Set up your Perplexity AI API Key credential.
    • MongoDB: Configure your MongoDB credential (connection string, database, and collection details).
    • Gmail: Set up your Gmail OAuth or API key credential.
  3. Configure Nodes:
    • Schedule Trigger: Adjust the "Schedule Trigger" node to your desired daily execution time.
    • Perplexity: Ensure the Perplexity node is configured to take the relevant news content as input for summarization.
    • MongoDB: Configure the MongoDB node to specify the collection where the news summaries should be stored.
    • Gmail: Customize the "Gmail" node with the recipient email address, subject, and the body content for your daily news digest. You will likely use expressions to dynamically include the summarized news from previous steps.
    • Code Node: Review the "Code" node (if present and connected in the full workflow) to understand or modify any custom logic for data transformation or formatting before storage or emailing.
  4. Activate the Workflow: Once configured, activate the workflow to start daily news aggregation.

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