Extract listings with PostgreSQL
Runs on a schedule across PostgreSQL, Slack and Google Sheets, walks long lists in batches, then drops anything it has already handled. Built for listings, around a "Init Cursor" step, in 33 documented nodes.
Extract listings with HTTP / REST API and PostgreSQL. An original, ready-to-import n8n workflow built around the 'Web Scraping' pattern for data & analytics. It runs on a schedule and orchestrates 33 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. Your team sees the right data at the right time.
Key benefits
- ✓Keeps PostgreSQL and Slack in step for listings, without anyone re-typing a row
- ✓Safe to re-run: records already in PostgreSQL or Slack are skipped, across all 33 nodes of this listings build
- ✓A failed PostgreSQL or Slack call is retried rather than dropped, at any of the 33 nodes in this listings build
- ✓Batches the work so PostgreSQL rate limits never break a listings run
- ✓Every listings run leaves an audit row behind, alongside PostgreSQL
Use cases
- →Teams keeping PostgreSQL and Slack aligned by hand for listings
- →A backlog too large to push into PostgreSQL in one pass, across 33 nodes
- →Listings work where "Init Cursor" is still a manual step before PostgreSQL
- →Listings work that only reaches PostgreSQL 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.
- •Fetching pages over HTTP and shaping the response into items
- •Diffing against the previous snapshot so only real changes alert
- •Zipping parallel arrays into one item per record
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, HTTP / REST API). 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.
Related templates
Collect job posts for listings
Listings on n8n: runs on a schedule across Google Sheets, Slack and PostgreSQL, starting at "Fetch Target Page". Diffs the two sides and writes only the gaps. 22 documented nodes.
Extract listings: Slack, scheduled
Listings on n8n: runs on a schedule across Slack, PostgreSQL and Google Sheets, starting at "Read Source Feed". Runs the text through an AI chain. 24 documented nodes.
Collect job posts with PostgreSQL
Listings on n8n: runs on a schedule across PostgreSQL, Slack and Google Sheets, starting at "Read Source Feed". Runs the text through an AI chain. 22 documented nodes.
Extract prices with PostgreSQL
Price monitoring on n8n: runs on a schedule across PostgreSQL, Slack and Google Sheets, starting at "Init Cursor". Walks long lists in batches. 23 documented nodes.