us-treasury-yield-curve
Official Treasury XML (OData Atom) feed: …/interest-rates/pages/xml?data=daily_treasury_yield_curve&field_tdr_date_value_month=YYYYMM.
- Type: XML · Rights: OFFICIAL_OPEN_DATA (public domain) · Real-time: END_OF_DAY (posted ≈ 15:30–18:00 ET)
- Instruments: 13 tenors
US1M … US30Y(TREASURY, unit percent). Fields: YIELD (+ LAST_PRICE copy), PREVIOUS_CLOSE. - Quirks: the month file only contains the current month → the previous month is fetched when fewer than 2 rows exist. Tenors that did not exist (e.g. 4-month before 2022) are simply absent.