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Playground demo key · api.reefapi.com
post/collectr/v1/set2 credits

One set's analytics as Collectr shows them: the total value of the set today and its value history, volatility score, biggest market movers, how many cards fall in each price band, rarity and variant breakdown, weekly sales volume and the most wishlisted cards - plus the set's name, code, release date and card count. Use search with set_id for the full card list with prices.

Working example
Parameters

Collectr set id (from sets or a row's set_id) or a set URL.

Only the last N days of the set value history (default: all of it). (1–4000)

Currency for every price. Collectr publishes USD; other currencies use Collectr's own daily exchange rate (returned as exchange_rate).

How many fresh exits to try before giving up. (1–5)

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/collectr/v1/set \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"set_id":"1663"}'

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