Send monthly rent and sales market updates to Slack with Rentcast and Supabase
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 20 nodes and runs on a schedule (every month). Along the way it connects Supabase and Slack. It also calls api.rentcast.io and voffipplerpdeedrexvf.supabase.co over HTTP.
How it runs
Trigger: On a schedule (every month).
- Set Zipcode Parameter (Edit Fields (Set)): sets 1 field: zipcode
- Fetch Rentals from Supabase (Supabase): get many
- Fetch Sales from Supabase (Supabase): get many
- Merge: merges the data from its input branches
- Aggregate: combines items into one
- If: checks a condition and branches into true / false
- Analyze Empty Data Response (Code): runs custom JavaScript code
- Fetch Market Data (HTTP Request): calls api.rentcast.io
- If: checks a condition and branches into true / false
- Upsert Rentals to Supabase (HTTP Request): calls voffipplerpdeedrexvf.supabase.co (POST)
…plus 9 more steps. See the full node list below.
Services it uses
HTTP calls to: api.rentcast.io, voffipplerpdeedrexvf.supabase.co
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (9)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - HTTP Request
n8n-nodes-base.httpRequest - Edit Fields (Set)
n8n-nodes-base.set - Supabase
n8n-nodes-base.supabase - Merge
n8n-nodes-base.merge - If
n8n-nodes-base.if - Aggregate
n8n-nodes-base.aggregate - Code
n8n-nodes-base.code - Slack
n8n-nodes-base.slack
From the author
Quick overview Youtube Video: https://youtu.be/zJlncb1T074 This workflow runs monthly, checks Supabase for up-to-date real estate market records for a configured ZIP code, and either reports existing month-over-month rent and sale trends or fetches fresh…