Auto-post the content calendar: Slack + sub-workflow
Runs on a schedule across Slack, Notion and PostgreSQL, runs the text through an AI chain, then reads the feed and keeps only what is new. Built for captions, around a "Read Source Feed" step, in 31 documented nodes.
Auto-post the content calendar with PostgreSQL and Slack in real time. An original, ready-to-import n8n workflow built around the 'Social Scheduler' pattern for content creation & media. It runs on a schedule and orchestrates 31 nodes across Slack, Notion, 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 Notion in step for captions, without anyone re-typing a row
- ✓Safe to re-run: records already in Slack or Notion are skipped, across all 31 nodes of this captions build
- ✓A failed Slack or Notion call is retried rather than dropped, at any of the 31 nodes in this captions build
- ✓Every captions run leaves an audit row behind, alongside Slack
- ✓The captions AI step is isolated from Slack, so models swap without touching the other 31 nodes
Use cases
- →Teams keeping Slack and Notion aligned by hand for captions
- →Captions work where "Read Source Feed" is still a manual step before Slack
- →Captions work that only reaches Slack on a schedule, when someone remembers to start it
Integrations
Workflow preview (31 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (31 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
Architect levelThe deepest tier - sub-workflow delegation, state snapshots, and full observability.
- •Marking rows published only after the post succeeds
- •Moving data between Slack, PostgreSQL and Notion in a single run
- •Normalising timestamps before anything downstream compares them
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, Notion, PostgreSQL, Google Sheets, …). 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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