Brazilayer Causal Chains
GET https://api.brazilayer.com/v1/cadeias/cafe_kc
Causal chain for arabica coffee: minimum temperature forecast 72h ahead over the southern Minas belt (frost is the event that historically moves KC hardest, operational threshold 3 °C) → consecutive dry days stressing flowering → observed rainfall → the official BRL/USD rate that converts the international price for the grower. Brazil is the top arabica exporter. Physical signal only: bring your own price. Free sample, no payment: https://api.brazilayer.com/v1/cadeias/amostra
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.brazilayer.com/v1/cadeias/cafe_kc"
# 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 10:01 | Valid 402 | 402 | 558 ms | $0.05 |
| 2026-10-11 05:30 | Valid 402 | 402 | 355 ms | $0.05 |
| 2026-10-11 01:00 | Valid 402 | 402 | 600 ms | $0.05 |
| 2026-10-10 20:30 | Valid 402 | 402 | 491 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