Post New Articles from Feeds to Slack Channel

This workflow contains community nodes that are only compatible with the self-hosted version of n8n. 📄 Post New Articles from Feeds to Slack Channel 🧠 What This Workflow Does This workflow automates the discovery and sharing of fresh articles from a curated list of RSS feeds. It performs the following steps: Reads a list of RSS feed URLs from a Google Sheet (Feeds tab). Fetches the latest articles from each feed. Checks for duplicates against previously published links stored in another sheet (Posted Articles tab). Filters out already shared articles. Posts the new articles to a designated Slack channel with formatted titles and links. Logs the newly shared articles back into the Google Sh

Help me set up the n8n workflow "Post New Articles from Feeds to Slack Channel" (https://n8n.io/workflows/5333). It uses: Google Sheets, Slack, Code. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.