US Treasury Data API — debt, FX & rates (no key)

Official U.S. Treasury FiscalData as a clean HTTP API (and MCP tool): the national debt (Debt to the Penny), the Treasury reporting rates of exchange by country/currency, and the average interest rates on U.S. Treasury securities — current or over any date range. Authoritative government data, reshaped to clean typed rows. No API key. Pay per query.

• 💵 National debt — total public debt outstanding, split into debt held by the public vs intragovernmental, daily.
• 💱 Exchange rates — the official Treasury reporting rates of exchange used across the U.S. government, by country/currency.
• 📉 Interest rates — average interest rates on Treasury bills, notes, bonds and the total marketable/non-marketable debt.
• 🗓️ Current or historical — filter any dataset by a date range.
• 💵 Pay per query · no key · official Treasury data.

The use case it was built for

Track the U.S. national debt for a dashboard, use the official Treasury FX rate for government-facing accounting, or chart interest rates on the debt. This API returns the numbers straight from Treasury, no scraping, no key.

Sample output (debt, latest)

{
  "ok": true, "dataset": "Debt to the Penny", "count": 1,
  "data": [
    { "date": "2026-09-16", "totalPublicDebt": 40094080427790.97,
      "debtHeldByPublic": 32406353922774.30, "intragovernmental": 7687726505016.67 }
  ]
}

How to use

• HTTP API (Standby): POST or GET /debt, /exchange-rates, /interest-rates. GET / returns help. Example: GET /exchange-rates?country=Argentina.
• Normal run: pass { operation, start, end, ... }; results land in the dataset + key-value store.
• MCP tool: expose it to your agent via Apify's MCP server.

Input

• operation — debt · exchange-rates · interest-rates.
• start / end — date range (YYYY-MM-DD). country / currency — (exchange-rates) filters. limit — cap rows.

Pricing

Per query from $0.005 (down to $0.002 on higher tiers). One call = one query (a date range returns many rows at once).

Related Actors

• SEC EDGAR API — company filings and financials.
• Currency Exchange — live ECB market rates and conversion.

FAQ

Do I need a key? No — Treasury FiscalData is keyless.

How current is the debt? Debt to the Penny updates each business day.

Are these market FX rates? No — they're the Treasury's official reporting rates (quarterly), used across the U.S. government, not live market rates. For market rates use our Currency Exchange actor.

Notes & limits

Data from the U.S. Department of the Treasury FiscalData API. Up to 1000 rows per call; use a date range to focus.