← All endpoints
x402.donnyautomation.com treasury
https://x402.donnyautomation.com/treasury
answers 402
US Treasury par yield curve API - every constant-maturity rate from 1 month to 30 years for any published business day, plus the spreads nobody wants to compute themselves. 2s10s, 3m10y and 5s30s are returned with an explicit inversion flag, because the real question is whether the curve is inverted, not what fourteen numbers are. A tenor Treasury did not publish that day is null, never zero. For
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.03
- Network
- base
- Pay to
- 0x2740651e046c59aB2A6510401140643292d3a96F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 87 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:30:22.221Z (3d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.donnyautomation.com%2Ftreasury"