US Treasury Data API — debt, FX & rates (no key)
Pricing
from $2.50 / 1,000 treasury queries
US Treasury Data API — debt, FX & rates (no key)
Official U.S. Treasury FiscalData: the national debt (Debt to the Penny), Treasury reporting rates of exchange by country/currency, and average interest rates on Treasury securities. Current or historical. Clean HTTP API + MCP, no key. Pay per query.