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US Treasury Par Yield Curve Data
x402
US Treasury Par Yield Curve Data is a paid API for AI agents from d1x8xrm7jrzkbs.cloudfront.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns the current month's US Treasury daily par yield curve rates in normalized JSON format, with date and tenor columns in percent.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-request datasets and Amazon Bedrock inference for AI agents, settled in USDC over the x402 protocol on Base.
Output
A JSON object containing the US Treasury daily par yield curve for the current month, with rows keyed by date and columns for each tenor (e.g. 1-month, 3-month, 6-month, 1-year, 2-year, 5-year, 10-year, 30-year), all expressed as percentages.
Example use cases
Bond pricing discount rate lookup
“I need the current US Treasury par yield curve rates to discount future cash flows on a bond portfolio — can you fetch the latest daily par yields for this month?”
Yield curve shape analysis
“Pull the latest Treasury par yield curve data so I can check whether the curve is inverted or normal right now — I want all tenors for the current month.”
Risk-free rate for options model
“What's the current risk-free rate from the US Treasury par yield curve? I need the full tenor grid in JSON to feed into my options pricing model.”
Technical details
Endpoint
GEThttps://d1x8xrm7jrzkbs.cloudfront.net/data/us-treasury/par-yield-curve.jsonWhen to prefer
Choose this endpoint when you need structured, normalized US Treasury par yield curve data for the current month in JSON, ready to use in financial models, bond pricing, or interest rate analysis. It is particularly suited for AI agent workflows that need programmatic access to daily Treasury rates without scraping the Treasury website, and where micro-payment per call via USDC/x402 is acceptable. Prefer this over raw Treasury XML/CSV sources when you need clean JSON output with minimal processing.
Side effects
- Payment not settled — 402 response if USDC payment via x402 protocol is not included or fails
- Data unavailable — Treasury may not publish curve data on weekends/holidays, resulting in empty or partial dataset
- Format error — only 'json' is supported as format; other values may be rejected
- Stale data — current month data may be incomplete if queried early in the month
- Network/CDN error — CloudFront distribution may be temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| format | string | Response format; only json is supported |
Output
Schema · Response
{
"type": "object",
"description": "US Treasury daily par yield curve for the current month, normalized JSON (date + tenor columns in percent)"
}Tags
x402
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