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US Treasury Par Yield Curve Rates
x402
US Treasury Par Yield Curve Rates is a paid API for AI agents from opendata402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-15).
Returns daily US Treasury par yield curve rates (1-month to 30-year) for the latest business days of the current month.
Price / call$0.001
Success—
StatusUnknown
How this service works
Daily US Treasury par yield curve rates from the US Department of the Treasury: 1-month to 30-year yields for the latest business days of the current month. Use it for interest rate context, discounting, bond and macro analysis. US public domain.
Output
Returns a JSON array of daily Treasury par yield curve snapshots for the requested number of latest business days in the current month. Each record includes the date and par yields for standard maturities: 1-month, 2-month, 3-month, 4-month, 6-month, 1-year, 2-year, 3-year, 5-year, 7-year, 10-year, 20-year, and 30-year.
Example use cases
Risk-free rate for DCF valuation
“Pull today's US Treasury yield curve so I can use the 10-year rate as the risk-free rate in my discounted cash flow model.”
Yield curve inversion monitoring
“Fetch the Treasury par yield curve rates for the last 10 business days so I can check whether the 2-year yield is still above the 10-year and track the inversion trend.”
Macro interest rate context
“I'm writing a market commentary — can you grab the latest US Treasury yields across the full curve from 1-month to 30-year so I can describe where rates stand today?”
Technical details
Endpoint
GEThttps://opendata402.com/v1/treasury/yields?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need official US government Treasury par yield curve data for interest rate context, risk-free rate benchmarks, bond pricing, or macro analysis. It sources directly from the US Department of the Treasury (public domain), making it authoritative for any application requiring official rates. Prefer it over scraped or third-party rate aggregators when data provenance matters. Best for current-month, recent-business-day lookups rather than deep historical series.
Side effects
- days parameter out of range (must be 1–23) returns a validation error
- no data available for the current month yet (e.g. first day of month before any business day closes)
- upstream Treasury data source unavailable causes a 5xx or empty response
- invalid query parameter format returns a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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