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US Treasury Yield Curve & Interest Rates
x402
US Treasury Yield Curve & Interest Rates is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).
Returns the Daily Treasury Par Yield Curve fused with average outstanding debt interest rates, including the 2s10s spread and a yield-curve inversion flag, for a given calendar year.
Price / call$0.015
Success—
StatusUnknown
How this service works
US Treasury interest rates: the Daily Treasury Par Yield Curve fused with the average interest rates on the outstanding debt by security type. Computes the 2s10s spread and an inversion flag. The yield curve is a resilient partial grain that degrades to the average rates if its upstream is unreachable.
Output
A JSON object containing the Daily Treasury Par Yield Curve rates fused with average interest rates on outstanding US debt by security type, the computed 2s10s spread, and a boolean inversion flag. Falls back gracefully to average debt rates if the par yield curve upstream is unavailable.
Example use cases
Example prompt
“Pull today's US Treasury par yield curve data, including the 2s10s spread and whether the curve is currently inverted.”
Technical details
Endpoint
GEThttps://api.agentstools.dev/treasury/ratesWhen to prefer
Use this endpoint when you need authoritative US Treasury yield curve data enriched with average outstanding debt rates and pre-computed spread/inversion signals in a single call, especially when building macroeconomic dashboards, recession monitors, or fixed-income analysis tools. Prefer over raw Treasury scraping when you need the 2s10s spread and inversion flag pre-computed and a resilient fallback to average rates.
Side effects
- Requested year is outside the supported range (1990–2100) — 400 error
- Treasury upstream temporarily unreachable — partial response using average debt rates only (degraded mode)
- Year has no data yet (future year) — empty or partial dataset
- x402 payment not included or insufficient — 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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