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Mercury402 Treasury Yield Curve Daily Snapshot
x402
Mercury402 Treasury Yield Curve Daily Snapshot is a paid API for AI agents from api.mercury402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns the full US Treasury yield curve rates for a specific date, covering maturities from 1-month to 30-year.
Price / call$0.05
Success—
StatusUnknown
How this service works
76 live pay-per-call financial data APIs for AI agents. Treasury, FRED, forex, spreads, breakeven inflation, macro bundles, and composite dashboards. USDC on Base.
Output
A JSON object containing the requested date and a map of Treasury maturities (e.g. 1_MONTH, 3_MONTH, 6_MONTH, 1_YEAR, 2_YEAR, 5_YEAR, 10_YEAR, 30_YEAR) to their corresponding annualized yield rates in percent.
Example use cases
Macro research yield curve check
“What did the Treasury yield curve look like on January 15, 2025? Give me all the rates from the 1-month bill out to the 30-year bond.”
Detecting yield curve inversion
“Fetch the Treasury yield curve snapshot for October 3, 2023 — I want to see if the curve was inverted that day by comparing short-term and long-term rates.”
Risk-free rate input for valuation model
“I need the daily Treasury yield curve for December 31, 2024 to use as the risk-free rate baseline in my discounted cash flow model.”
Technical details
Endpoint
GEThttps://api.mercury402.com/v1/treasury/yield-curve/daily-snapshotWhen to prefer
Choose this endpoint when you need a complete point-in-time snapshot of the US Treasury yield curve for a specific date — ideal for historical analysis, risk-free rate inputs, yield curve shape analysis, or macro research. Prefer over real-time streaming feeds when a single dated snapshot is sufficient and cost efficiency matters at $0.05 per call.
Side effects
- Date not yet available — Treasury data may lag by 1 business day; returns error if date is too recent
- Weekend or holiday date — no Treasury data published; may return empty or error
- Invalid date format — must be YYYY-MM-DD; malformed dates return 400
- Future date — yields not available for dates in the future
- Payment failure — USDC payment not confirmed, returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| date | string | Specific date for yield curve (YYYY-MM-DD) |
Output
Schema · Response
{
"type": "json",
"example": {
"date": "2026-03-11",
"rates": {
"1_MONTH": 5.42,
"3_MONTH": 5.38
}
}
}Tags
x402
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