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US Treasury Average Interest Rates
x402
US Treasury Average Interest Rates is a paid API for AI agents from x402-datashop-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns monthly average interest rates the US Treasury pays on outstanding securities, sourced from the official FiscalData API, filterable by security type and date range.
Price / call$0.005
Success—
StatusUnknown
How this service works
Monthly average interest rates the US Treasury pays on its outstanding securities, from the official FiscalData API (Average Interest Rates dataset, updated monthly). Query: ?security=Treasury Bills (exact security_desc, optional; e.g. Treasury Notes, Treasury Bonds) &since=2026-01-01 (optional record_date floor) &limit=12 (1-100, newest first). Returns record_date, security type/name and avg rate in percent. Cached 24h.
Output
A list of monthly records (newest first, up to the requested limit) each containing record_date, the security description (e.g. Treasury Bills, Treasury Notes), and the average interest rate in percent. Results are cached for 24 hours and sourced from the official US Treasury FiscalData API.
Example use cases
Example prompt
“Can you pull the last 12 months of average interest rates the US Treasury is paying on Treasury Bills, going back to January 2024?”
Technical details
Endpoint
GEThttps://x402-datashop-production.up.railway.app/v1/us/treasury-ratesWhen to prefer
Use this endpoint when you need official, government-sourced monthly average interest rates the US Treasury pays on its outstanding securities (Bills, Notes, Bonds, etc.). Prefer this over third-party rate aggregators when regulatory accuracy and official sourcing matter, or when you need historical monthly series going back several years.
Side effects
- Invalid or misspelled security_desc returns no results or an error
- since date in wrong format (not ISO date) causes a 400 bad request
- limit outside 1-100 range is rejected
- Upstream FiscalData API unavailable causes a 502 or cached stale response
- Requesting data before the dataset's earliest record returns empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
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