OfferUp price tracker: get new listings for any search as a webhook alert

Description and use

Automated daily search for new OfferUp listings via Apify with instant Slack/Discord webhook alerts.

Problem

Automatically detect new OfferUp listings for a specific search and notify via webhook, avoiding manual daily checks.

Outcome

Daily automated detection of new OfferUp listings with minimal cost ($1.50 per 1,000 listings) and instant webhook alerts, enabling quick purchase decisions.

Workflow

• Define search parameters (keywords, location, radius, price range, conditions, sort order) in a JSON object.
• Configure feed mode: set onlyNewListings:true and provide alertWebhookUrl for Slack/Discord.
• Create an Apify task with the input and schedule a daily cron job (e.g., 13:00 America/Chicago).
• Optionally run the Actor via Python using apify_client to retrieve dataset items and filter for price drops.
• Receive webhook notifications with sample items and a text field for instant Slack/Discord alerts.

Evidence

Refreshing an OfferUp search every morning to catch a fairly priced road bike or a used camera body is a job for a script, not a person.

Source

It has a feed mode that returns only listings you have not seen before, it can POST a summary to a Slack or Discord webhook on its own, and it charges $1.50 per 1,000 listings delivered, so a daily check of one search costs cents rather than dollars a month.

Source

Two fields turn a search into a feed: onlyNewListings:true makes the Actor remember every listing it delivered for this exact input... alertWebhookUrl makes the Actor POST one JSON message when new items appear.

Source