Reef AI: ask for any data. Try it
The playground

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/immoweb/v1/property_detail2 credits

The full immoweb listing: price and price per m², bedrooms, bathrooms, shower rooms and toilets, habitable / land / garden / terrace surfaces, EPC or PEB score with primary energy consumption and carbon emission, construction year, building condition and facade count, heating and energy equipment, cadastral income, monthly charges, flood zone and urban-planning status, land characteristics, parking, thirty amenity flags, address and coordinates, every photo, the full description in the language the advertiser wrote it, and the advertising agency.

Working example
Parameters

Immoweb listing id — the digits at the end of any immoweb listing URL ('21866842'), or paste the whole URL and the id is taken out of it. A Belgian listing disappears the day it sells, so there is no id that stays valid forever; for a guaranteed-live example pass `newest:<property_type>` (newest:house, newest:apartment, newest:land …) and the newest listing of that kind is resolved and returned. That form costs one extra upstream lookup.

Belgium is trilingual and the language is NOT only a label. Ids, prices, surfaces and coordinates are identical in all three, but an advertiser writes the ad in one or more languages: ask for a language they did not use and immoweb returns a null title and description. This engine falls back to whatever the advertiser did publish and tells you which language it used in `description_language`. What the language really controls is the LABELS: province and region names, the EPC wording and the formatted price string.

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/immoweb/v1/property_detail \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"property_id":"newest:house"}'

Press Send request to see the live result here.

Not sure what to send? Ask Reef AI

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