US Treasury Daily Interest Rate Feed
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Daily US Treasury par yield curve (1-month to 30-year), real yields, T-bill and long-term rates in XML.
Example request
curl -s 'https://home.treasury.gov/resource-center/data-chart-center/interest-rates/pages/xml?data=daily_treasury_yield_curve&field_tdr_date_value=2026'
Free tier, in plain English
Free, keyless XML feed; no usage limits are published.
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