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agent402.tools api treasury-yield-curve
https://agent402.tools/api/treasury-yield-curve
payable
Latest US Treasury daily constant-maturity yields (1mo, 3mo, 6mo, 1y, 2y, 3y, 5y, 7y, 10y, 20y, 30y) as clean JSON. Source: FRED DGS* series (St. Louis Fed), public domain, no key. No params - always returns the most recent published curve.
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
- 0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 83 ms
- Payment options
- 12 usable of 12
- Last checked
- 2026-08-10T09:09:30.250Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Ftreasury-yield-curve"