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.
Playground demo key · api.reefapi.com
post/vivino/v1/grapes2 credits
The grape enum behind `grape_ids` — 2229 grape varieties with the id, the name and how many wines Vivino holds for each.
Working example
Parameters
Filter the list by name, case-insensitive.
Which Vivino storefront to read. This changes the answer: the US and DE storefronts returned 1740 vs 740 matches for the same search and share ZERO merchants (measured 2026-09-23). Prices and availability are per storefront.
Results per page, 1-50. The source refuses more than 50 (HTTP 400). (1–50)
ReefAPI is one HTTP gateway to 632 live web-data APIs covering 3860 endpoints across 13 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.