Schedule social posts with Slack & PostgreSQL
Runs on a schedule across Slack, PostgreSQL and Google Sheets, pauses on a Wait node until it is time to continue, then branches on the check before anything is written. Built for captions, around a "Keep Valid Drafts" step, in 33 documented nodes.
Schedule social posts with PostgreSQL and Slack end to end. An original, ready-to-import n8n workflow built around the 'Social Scheduler' pattern for content creation & media. It runs on a schedule and orchestrates 33 nodes across Slack, HTTP / REST API, 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. What used to take a morning now runs on its own.
Key benefits
- ✓Keeps Slack and PostgreSQL in step for captions, without anyone re-typing a row
- ✓Safe to re-run: records already in Slack or PostgreSQL are skipped, across all 33 nodes of this captions build
- ✓A failed Slack or PostgreSQL call is retried rather than dropped, at any of the 33 nodes in this captions build
- ✓Branches rejoin before Slack, so a captions run reports once rather than 33 times
- ✓The pause before Slack is durable — a captions run survives a restart
Use cases
- →Teams keeping Slack and PostgreSQL aligned by hand for captions
- →Captions sequences that run over days and must survive a restart before Slack
- →Captions work where "Keep Valid Drafts" 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 (33 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (33 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.
- •Reading a content calendar and publishing only what is due
- •Marking rows published only after the post succeeds
- •Moving data between Slack, PostgreSQL and Notion in a single run
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, HTTP / REST API, 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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