n8n Workflow: HN GitHub Posts to X & LinkedIn with OpenAI + Airtable

Turn Hacker News GitHub launches into ready-to-post X (Twitter) + LinkedIn updates—automatically

This n8n workflow scans the Hacker News front page every 6 hours for posts that link to GitHub, generates polished X (Twitter) and LinkedIn drafts with OpenAI (gpt-4o-mini), queues them in Airtable, asks you to review via Telegram, and then publishes to both platforms.

What this workflow does

• Runs on a schedule: executes every 6 hours to pull the Hacker News homepage and extract front-page submissions.
• Filters GitHub links: keeps only submissions that link to GitHub repositories.
• Deduplicates with Airtable: checks Airtable for existing records matching each Hacker News post and only processes items not logged before.
• Builds content using OpenAI: fetches each new GitHub repository page, converts it to Markdown, and sends the details to OpenAI (gpt-4o-mini) to generate Twitter/X and LinkedIn copy in JSON format.
• Validates output: drops any items where the expected twitter or linkedin fields are missing.
• Creates drafts in Airtable: stores the source URL, title, and drafted X + LinkedIn content in a new Airtable record.
• Review in Telegram: sends drafts to Telegram for review, waits five minutes, then publishes to X and LinkedIn.
• Marks completion: updates the Airtable record to flag the X and LinkedIn posts as published.

Use cases

• Share daily/weekly developer discovery on social without manual research.
• Promote relevant GitHub projects found on Hacker News while keeping a verifiable Airtable log.
• Maintain human-in-the-loop approval using Telegram before publishing to X and LinkedIn.

Technical details

• Airtable: Airtable Personal Access Token; base/table IDs for storing Post, Title, Url, Tweet, LinkedIn, and publish completion fields (e.g., TDone/LDone).
• OpenAI (LangChain): uses gpt-4o-mini to generate X and LinkedIn drafts from GitHub content converted to Markdown.
• Telegram: sends drafts for review and includes a 5-minute wait before posting.
• X / Twitter: publishes the validated draft content.
• LinkedIn: publishes the validated draft content.
• Workflow nodes: code, no op, wait, merge, filter, twitter (as reflected in the workflow’s design).