Try any of 2778 endpoints — live.
Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.
The shop's own category tree with its own item counts. JAPAN: 16 top-level departments over three levels, every node carrying the count the chain publishes for it — メンズウェア 680,072 · シューズ 256,471 · レディースウェア 199,572 · 服飾雑貨他 178,470 · バッグ 139,302 · 家電・ビジュアル・オーディオ 40,736 · スポーツ 32,666 · ホビー 27,098 · キッチン用品 20,184 · 楽器 6,828 · カメラ 6,413 · インテリア小物 6,730 · キッズ 6,244 · パソコン 5,975 · DIY用品 1,676 · 家具 1,071, and a catalogue total of 1,609,533 (2026-10-08). Names are Japanese because that is what the source publishes; no translation is invented. The same call also returns the 47 prefectures, the 11 sales areas and the 23-colour palette the search filters use. UNITED STATES: the store's collections with their handles — pass one back as `search(collection=…)`. 🔴 Their own `products_count` is republished as the source prints it and is NOT a measurement: the biggest collection claims 2,357,882 products on a store whose search surface caps at 1,000 and whose whole product list was walked to 15,000, so the figure is a Shopify smart-collection count, not a catalogue size.
curl -X POST https://api.reefapi.com/2ndstreet/v1/categories \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"market":"jp"}'Hit Send to run this endpoint live.
What you can run here, without an account
ReefAPI is one HTTP gateway to 438 live web-data APIs covering 2778 endpoints across 14 categories. Every endpoint answers with the same JSON envelope, so one integration reaches all of them. Each response reports what it cost and when the source was read.
No signup, no API key and no card are required to try an endpoint on this page. Anonymous calls run on a shared demo key, capped at 15 calls per hour per visitor. Pick an API, fill the parameters and the real response comes back from the live source, not from a canned sample. A free account lifts the cap and gives you 1,000 credits and your own key.
Browse every API in the catalog, read an endpoint's fields and example response in the docs, or see per-call credit costs on the pricing page.
Coverage by category
| ecommerce | 191 |
| classifieds | 99 |
| media | 25 |
| real-estate | 21 |
| utilities | 19 |
| developer-tools | 18 |
| jobs | 17 |
| reviews | 15 |
| social | 12 |
| travel | 9 |
| finance | 5 |
| other | 3 |
| search-seo | 2 |
| government | 2 |