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api.scanna.xyz open-interest
https://api.scanna.xyz/open-interest
payable
Open interest in USD. Omit market_id for the platform-wide aggregate, or pass a Polymarket condition id (0x + 64 hex) to scope it to one market. Anything else - empty, whitespace, a repeated or bracketed parameter, or the literal GLOBAL - is 400, not silently answered as an aggregate. A well-formed id upstream does not know is 404, never an empty 200. 60-second shared cache; a stale read is disclo
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0xfca7D3B52D69b9b8371dd5765D3f294e46a4f59e
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 44 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:10:37.908Z (1d ago)
- Category
- data
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.scanna.xyz%2Fopen-interest"