Best Classifieds & Second-hand APIs (2026)
Best Classifieds & Second-hand APIs (2026) are ReefAPI category hubs for live JSON: classifieds & second-hand APIs return structured data for developer workflows. ReefAPI offers 4 non-legal classifieds & second-hand APIs behind one key, one credit pool and the same { ok, data, meta, error } envelope, with examples derived from the catalog and committed live snapshots.
Ranked Classifieds & Second-hand API list
Ranked by catalog action count, then alphabetically for ties; legal-heavy engines are excluded.
| # | Engine | What it returns | Actions | Snapshot sample | Free tier | Landing |
|---|---|---|---|---|---|---|
| 1 | OLX | offers[] (normalized, promoted slots filtered), search_id, total, has_more, next_offset | 10 | offers: 1086126943; search_id: 962E2CE19D73E182BF16D6811490C523 | yes | View API |
| 2 | Kleinanzeigen | listings[] (adid, title, price, location, images, seller_type, posted_date), total, page, has_m... | 8 | title: Wir kaufen iPhone 17 / 17 pro / 17 Pro Max neu und Gebraucht✅✅; price: 999 | yes | View API |
| 3 | AutoScout24 | listings[] (priceEvaluation + superDeal per card), page, total, total_pages, has_more, next_page | 7 | location: DE | yes | View API |
| 4 | Marktplaats | listings[] (price, condition, location, seller, images), facets, total, offset, has_more, next_... | 4 | title: Iphone 16 nieuw; price: 0 | yes | View API |
What each Classifieds & Second-hand API covers
OLX includes 10 actions (search, count, locations). OLX The primary catalog return is offers[] (normalized, promoted slots filtered), search_id, total, has_more, next_offset.
Kleinanzeigen includes 8 actions (search, listing, similar). Kleinanzeigen The primary catalog return is listings[] (adid, title, price, location, images, seller_type, posted_date), total, page, has_m....
AutoScout24 includes 7 actions (search, listing, makes). AutoScout24 The primary catalog return is listings[] (priceevaluation + superdeal per card), page, total, total_pages, has_more, next_page.
Marktplaats includes 4 actions (search, listing, categories). Marktplaats The primary catalog return is listings[] (price, condition, location, seller, images), facets, total, offset, has_more, next_....
Questions about Classifieds & Second-hand APIs
Which Classifieds & Second-hand API is free?
Every Classifieds & Second-hand API listed here can be tried with ReefAPI's free tier: 1,000 credits on signup, no card required. The current hub includes OLX, Kleinanzeigen, AutoScout24, Marktplaats.
Do these Classifieds & Second-hand APIs need login?
No source-site login is needed for the listed ReefAPI responses. You call ReefAPI with an x-api-key header, and each engine returns the standard JSON envelope.
How fresh is the Classifieds & Second-hand data?
Production requests fetch live data through ReefAPI. The table's sample data point comes from the committed snapshot for each engine, and the sitemap uses catalog freshness for recrawling.
What is the best Classifieds & Second-hand API to start with?
OLX appears first because this hub ranks engines by action count, then alphabetically for ties. Use that as a coverage signal, then choose the API whose returned fields match your workflow.