ToolMint US Econ Rates

Routes and prices

Free routes: /, /health, /openapi.json, /.well-known/x402.

Try it

Copycurl -i "https://toolmint-us-econ-rates-json.toolmint.workers.dev/rates?includeHistory=true&historyDays=60"

When to use it

• Get current Treasury par yields (1 month to 30 years), average interest rates on Treasury securities, Debt to the Penny, Treasury FX reporting rates and CPI-U in one call.
• A short history window for each.

Not for: market prices, real-time rates, forecasts or investment advice. This is public reference data, not investment advice.

Example

curl -i "https://toolmint-us-econ-rates-json.toolmint.workers.dev/rates/latest"

That hostname is the planned Worker name. The tool is not deployed yet.

Trimmed response (values illustrative):

{
  "tool": "us-econ-rates-json",
  "version": "0.1.0",
  "query": { "includeHistory": false, "historyDays": 60, "historyMonths": 12,
             "historyQuarters": 2, "startYear": 2024, "endYear": 2026 },
  "partial": true,
  "missing": [ { "section": "cpi", "reason": "BLS CPI not processed (REQUEST_NOT_PROCESSED): ..." } ],
  "latest": {
    "avgInterestRates": { "recordDate": "2026-09-30", "rows": [ { "recordDate": "2026-09-30", "securityType": "...", "security": "...", "avgInterestRatePct": 3.1 } ] },
    "debtToPenny": { "recordDate": "...", "debtHeldByPublic": 0, "intragovernmental": 0, "totalPublicDebtOutstanding": 0 },
    "exchangeRates": { "recordDate": "...", "count": 170, "majors": [ { "country": "Euro Zone", "currency": "Euro", "exchangeRate": 0.9 } ], "sample": [] },
    "yieldCurve": { "date": "2026-10-30", "yields": { "1M": 4.0, "2Y": 4.0, "10Y": 4.2, "30Y": 4.6 } },
    "cpi": null
  },
  "history": null,
  "provenance": {
    "fetchedAt": "2026-10-31T12:00:00.000Z",
    "sources": [ { "source": "api.fiscaldata.treasury.gov", "dataset": "Debt to the Penny", "license": "US Treasury Fiscal Data - U.S. Government work", "fetchedAt": "..." } ],
    "note": "US government public data. Not investment advice. ..."
  },
  "cached": false
}

All numbers above are placeholders. Yield tenors in the real output are 1M, 1.5M, 2M, 3M, 4M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 20Y, 30Y (values can be null). exchangeRate is units of foreign currency per 1 USD (Treasury reporting rate, quarterly). CPI series are CUUR0000SA0 (not seasonally adjusted) and CUSR0000SA0 (seasonally adjusted).

Data sources and licence

US Treasury Fiscal Data API, the Treasury daily par yield curve, and the BLS public API (v1, keyless). All US Government public data, no API keys. Cite the source as the response provenance shows. Each source's own terms apply.

Freshness and caching

Complete results are cached in memory for 1 hour (15 minutes for latest-only), CPI for 6 hours. Partial results are never cached. provenance.fetchedAt and each source's fetchedAt show when data was pulled. Upstream data has its own cadence (CPI is monthly, Treasury yields are daily, Treasury FX rates are quarterly); the tool adds no freshness of its own.

Limits

• BLS keyless quota makes CPI unreliable at volume; check partial.
• At most 10 years of CPI per call.
• startYear/endYear do not change the Fiscal Data sections (always most recent records).

Errors are not charged

Payment settles only on a successful answer. These responses are never settled: