Auto-post social posts with Slack and PostgreSQL
Runs on a schedule across Slack and PostgreSQL, runs the text through an AI chain, then reads the feed and keeps only what is new. Built for engagement, around a "Read Source Feed" step, in 19 documented nodes.
Auto-post social posts with PostgreSQL and Slack 24/7. An original, ready-to-import n8n workflow built around the 'Social Scheduler' pattern for marketing & advertising. It runs on a schedule and orchestrates 19 nodes across Slack, PostgreSQL. It uses n8n's LangChain AI nodes (Agent/Chain + chat model). Retry-on-fail is enabled on external calls. Import the JSON, add your credentials, and adapt the parameters. Your team sees the right data at the right time.
Key benefits
- ✓Keeps Slack and PostgreSQL in step for engagement, without anyone re-typing a row
- ✓Safe to re-run: records already in Slack or PostgreSQL are skipped, across all 19 nodes of this engagement build
- ✓A failed Slack or PostgreSQL call is retried rather than dropped, at any of the 19 nodes in this engagement build
- ✓Every engagement run leaves an audit row behind, alongside Slack
- ✓The engagement AI step is isolated from Slack, so models swap without touching the other 19 nodes
Use cases
- →Teams keeping Slack and PostgreSQL aligned by hand for engagement
- →Engagement work where "Read Source Feed" is still a manual step before Slack
- →Engagement work that only reaches Slack on a schedule, when someone remembers to start it
Integrations
Workflow preview (19 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (19 nodes)
A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.
From download to running in 3 steps
- 1Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
- 2Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
- 3Activate. Run it once to test, then toggle Active. The automation is live.
What you'll learn
Advanced levelAdds branching depth and audit logging on top of the core pattern.
- •Moving data between Slack and PostgreSQL in a single run
- •Normalising timestamps before anything downstream compares them
- •Adding retries and an explicit error path to external calls
Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.
Common questions
What exactly do I get?
The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.
How do I import it into n8n?
In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.
Do I need anything else for it to work?
You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Slack, PostgreSQL). No coding is required.
What if it doesn't work for me?
If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.
Can I modify or resell it?
You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.
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