PreReason
GET https://api.prereason.com/api/commodities/oil-producers
Crude oil and its USA producers side by side. US oil and gas stocks against the five year norm (EIA) and WTI and Brent spot prices, then the covered USA oil and gas producers, integrated majors, refiners and two oil field service companies coded as producers, each with its share price, its 1, 3 and 12 month changes beside WTI and the measured 90 day correlation of its daily changes with WTI. Commodity and company data for research agents. A paid call serves today or any ?date= on record.
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://api.prereason.com/api/commodities/oil-producers"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 09:16 | Valid 402 | 402 | 449 ms | $0.05 |
| 2026-10-11 05:00 | Valid 402 | 402 | 221 ms | $0.05 |
| 2026-10-11 00:30 | Valid 402 | 402 | 217 ms | $0.05 |
| 2026-10-10 20:00 | Valid 402 | 402 | 217 ms | $0.05 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves