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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/mtgmate/v1/decklist3 credits

Price a whole deck at MTG Mate. Paste one card per line (4 Lightning Bolt); the answer lists up to 10 in-stock printings per card with price and stock, the store's suggested pick, the deck total at that pick, and the cards it cannot fill.

Working example
Parameters

One card per line, exact names, up to 5000 characters.

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/mtgmate/v1/decklist \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"decklist":"4 Lightning Bolt\n2 Sol Ring"}'

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.

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