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Try any of 3860 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.

Playground demo key · api.reefapi.com
post/coolblue/v1/browse3 credits

Walk one of Coolblue's 403 categories — the catalogue view, and the richer of the two surfaces. Rows carry the typed delivery promise, the price with and without VAT, the review average, how many stores hold the item, the refurbished (Second Chance) price when there is one, and the colour variants. Use `categories` for the slugs and `filters` for the narrowing options.

Working example
Parameters

A Coolblue category slug such as 'headphones', 'washing-machines' or 'laptops', or a category URL. The `categories` action lists all 403 of them.

Which storefront to ask. Prices and stock genuinely differ between them (measured: 5 of 7 shared products had a different price on nl vs be) and each market lists products the others do not.

Facet segments in 'key:value' form, for example 'merk:apple'. One value per key (the source answers a multi-value '+' form with 404). Call the 'filters' action to list what a category accepts, with the result count behind each value.

Result order. All five were measured to genuinely reorder the grid. An unknown value is rejected rather than passed on, because the source accepts any string and silently ignores what it does not know.

Page of 22 results. A category publishes its own `total_pages`; asking past it returns NOT_FOUND. (1–)

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/coolblue/v1/browse \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"category":"headphones"}'

Press Send request to see the live result here.

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What you can run here, without an account

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.

Coverage by category

ecommerce350
classifieds116
real-estate29
media25
utilities18
jobs18
developer-tools18
reviews15
social15
search-seo11
travel8
other5
finance4