usenami.io

● healthy general

Historical open interest timeseries (1h/4h/1d) for a ticker/venue. 30-90d window cap. -- reliability 91.0/100 per Paygent Discover

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://api.usenami.io

/.well-known/x402.json