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US Treasury Yield Curve API
x402
US Treasury Yield Curve API is a paid API for AI agents from macro-data-api-313m.onrender.com, paid per call via x402, $0.01/call, status down (last checked 2026-10-30).
Returns the US Treasury par yield curve (1 month to 30 years) for a given date, including 2y-10y and 3m-10y spreads and yield curve shape classification (normal, flat, or inverted).
Price / call$0.01
Success—
StatusDown
How this service works
Returns the US Treasury par yield curve (1 month to 30 years) for a date, with the 2y-10y and 3m-10y spreads and whether the curve is normal, flat or inverted.
Output
Returns a structured response containing par yield rates for each Treasury maturity (1M, 2M, 3M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 20Y, 30Y), the 2y-10y spread in percentage points, the 3m-10y spread in percentage points, and a yield curve classification string (normal, flat, or inverted) for the requested date.
Example use cases
Daily yield curve shape check
“What does the US Treasury yield curve look like today — is it normal, inverted, or flat, and what are the 2y-10y and 3m-10y spreads?”
Historical recession signal research
“What was the shape of the Treasury yield curve on March 1, 2023, and what were the 3-month to 10-year and 2-year to 10-year spreads on that date?”
Macro dashboard rate snapshot
“Give me the full US Treasury par yield curve — every maturity from 1 month to 30 years — as of yesterday, December 9, 2024.”
Technical details
Endpoint
GEThttps://macro-data-api-313m.onrender.com/v1/yield-curve?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a complete snapshot of the US Treasury yield curve for a specific date, including pre-computed spread calculations and a human-readable curve shape label. It is ideal when you need the full curve in one call rather than fetching individual tenors separately. Prefer this over a generic spread endpoint when you want both the raw rates and the spread in a single response.
Side effects
- Date requested is a weekend or US market holiday — no Treasury data published for that day
- Date is in the future — data not yet available
- Date is before Treasury data history begins — returns error
- Malformed date format — expects YYYY-MM-DD
- Service temporarily unavailable on Render infrastructure (cold start delay)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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