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ExpertPremiumContent GenerationScheduled trigger22 nodes

Publish social posts: PostgreSQL & Slack

Runs on a schedule across PostgreSQL, Slack and Google Sheets, walks the list in batches, pausing between them, then drops anything it has already handled. Built for blog posts, around a "Read Content Calendar (PostgreSQL)" step, in 22 documented nodes.

Publish social posts with PostgreSQL and Slack on autopilot. An original, ready-to-import n8n workflow built around the 'Social Scheduler' pattern for content creation & media. It runs on a schedule and orchestrates 22 nodes across PostgreSQL, Slack, Google Sheets. 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 PostgreSQL and Slack in step for blog posts, without anyone re-typing a row
  • Safe to re-run: records already in PostgreSQL or Slack are skipped, across all 22 nodes of this blog-posts build
  • A failed PostgreSQL or Slack call is retried rather than dropped, at any of the 22 nodes in this blog-posts build
  • The pause before PostgreSQL is durable — a blog-posts run survives a restart
  • Batches the work so PostgreSQL rate limits never break a blog-posts run

Use cases

  • Teams keeping PostgreSQL and Slack aligned by hand for blog posts
  • Blog posts sequences that run over days and must survive a restart before PostgreSQL
  • A backlog too large to push into PostgreSQL in one pass, across 22 nodes
  • Blog posts work where "Read Content Calendar (PostgreSQL)" is still a manual step before PostgreSQL

Integrations

PostgreSQLSlackGoogle SheetsGoogle Gemini

Workflow preview (22 nodes)

The template's actual node layout and connections. Node parameters and credential slots unlock with the download.

Weekly ScheduleSchedule TriggerRead Content Calendar (…PostgresDue for Publishing?FilterPost One at a TimeSplit In BatchesPublish to SlackSlackSpace Out PostsWaitMark Row PublishedPostgresCount PublishedAggregateFingerprint for Idempot…CodeDrop Already-Processed …Remove DuplicatesSerialize Run Output (C…Convert To FileArchive Row SnapshotGoogle SheetsStamp Completion TimeDate TimePersist Run MetadataExecution DataLoad Previous SnapshotPostgresCompute Drift vs Snapsh…CodeSummarize Run StatsSetAppend Audit Row (Googl…Google SheetsSend Summary to SlackSlackCapture Failure ContextSetEscalate Failure to Sla…SlackPark in Dead-Letter Que…Postgres

What's inside (22 nodes)

A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.

AggregateCodeConvert To FileDate TimeExecution DataFilterGoogle SheetsPostgresRemove DuplicatesSchedule TriggerSetSlackSplit In BatchesWait

From download to running in 3 steps

  1. 1
    Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
  2. 2
    Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
  3. 3
    Activate. Run it once to test, then toggle Active. The automation is live.

What you'll learn

Production level

Production-grade: idempotency, dead-letter handling, and reconciliation included.

  • Reading a content calendar and publishing only what is due
  • Spacing posts with a batch loop and Wait to respect rate limits
  • Walking a list in batches instead of firing everything at once

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 (PostgreSQL, Slack, 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.

Original n8n workflow template created and owned by WorkflowCrate. After purchase you receive the ready-to-import JSON file and a license to use and adapt it in your own projects.