the402 endpoint detail

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api.scanna.xyz markets

https://api.scanna.xyz/markets

payable

Serves the in-memory Polymarket+Kalshi market universe (worker-refreshed ~60s; up to 5 min stale before the gate 503s). Filters and sorts the WHOLE cached universe by volume_24h, then slices: limit trims output, not work. Zero DB and zero upstream calls in the request path. Empty pages (filters matching nothing, cursor past end) return 200 and are billable.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0xfca7D3B52D69b9b8371dd5765D3f294e46a4f59e
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
128 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:09:45.429Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.scanna.xyz%2Fmarkets"