n8n RSS to Social Posts Workflow with PostWire Scheduler

Turn every new RSS post into scheduled social drafts—automatically

This n8n workflow watches your RSS/Atom feed hourly, converts newly published articles into platform-specific social captions using PostWire, and schedules those drafts to PostWire’s queue for LinkedIn, X, Bluesky, Mastodon, and optionally Instagram—all with an automatic 30-minute posting delay.

What this workflow does

• Runs hourly and reads your configured RSS/Atom feed for new items.
• Avoids backlog posting by filtering to only articles published within the last two days.
• Extracts key content for each item: article title, link, a cleaned summary, and an image URL (when present).
• Builds a per-network caption prompt from the article details and selects the target platform list configured for your PostWire setup.
• Handles Instagram intelligently: if no image URL is available, the workflow removes Instagram from the platform list to prevent image-dependent posts.
• Generates drafts via PostWire by calling /api/generate to produce a separate caption draft for each selected network.
• Schedules publication by calling /api/schedule, queueing each per-platform draft to publish 30 minutes in the future (including the image when available).

Use cases

• For SaaS teams: automatically promote every blog update across multiple social networks without manual writing.
• For automation engineers: keep an n8n RSS-to-social pipeline running reliably with PostWire generation and scheduling.
• For founders and operators: ensure consistent cross-platform posting with a controlled “no old backlog” window.

Technical details

• n8n trigger/node: RSS Feed Read Trigger (runs hourly)
• Core nodes: set, filter, sticky note, http request, rss feed read trigger
• PostWire integration: uses an HTTP Header Auth credential with Authorization: Bearer <your_postwire_key>
• PostWire endpoints: /api/generate and /api/schedule

Setup is straightforward: add your PostWire API key, connect your networks in PostWire, set your RSS/Atom URL, update the platform list (linkedin, x, bluesky, mastodon, instagram), and optionally adjust the “last two days” filter window and the schedule delay.