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US Treasury Average Interest Rates
x402
US Treasury Average Interest Rates is a paid API for AI agents from avg-interest-rates.use.x402atlas.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Returns the latest month's average interest rates the US Treasury pays on its outstanding debt, broken down by security type (T-bills, Notes, Bonds, TIPS, FRNs, savings securities, and total).
Price / call$0.01
Success—
StatusUnknown
How this service works
Average interest rate the US Treasury pays on its outstanding debt, latest month, by security: Treasury Bills (T-bills), Notes, Bonds, TIPS, FRNs, savings securities and total interest-bearing debt. Official Fiscal Data figures for tracking the cost of US government borrowing and national debt interest.
Output
Returns a JSON object with the record date (month-end YYYY-MM-DD), a count of securities returned, and an array of rate objects each containing the security class name (e.g. Treasury Bills, Treasury Notes), its category (Marketable, Non-marketable, or Interest-bearing Debt), and the average interest rate as a percentage. Data sourced from official US Treasury Fiscal Data.
Example use cases
Tracking cost of US government borrowing
“What's the latest average interest rate the US government is paying on its total interest-bearing debt, and how does it break down across T-bills, Notes, and Bonds?”
Monitoring TIPS and FRN rates for inflation analysis
“Can you pull the most recent average interest rates on Treasury Inflation-Protected Securities and Floating Rate Notes from official fiscal data?”
Building a national debt interest cost dashboard
“I need the current average interest rates for all US Treasury security types — T-bills, Notes, Bonds, TIPS, FRNs, and savings securities — so I can calculate the blended cost of the national debt.”
Technical details
Endpoint
GEThttps://avg-interest-rates.use.x402atlas.com/latest?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the official, government-sourced average interest rates the US Treasury pays on its outstanding debt by security type for the most recent month. Prefer this over scraped or third-party rate aggregators when accuracy and official sourcing matter, such as for fiscal analysis, policy research, or financial reporting dashboards.
Side effects
- Data may lag by one month if Treasury Fiscal Data hasn't published the latest figures yet
- No input parameters available so no user-input validation errors expected
- Upstream Fiscal Data source outage could cause stale or missing data
- Payment failure (402) if USDC payment is not submitted correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
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