SpellzCode — US Treasury interest rates: average rates on bills, notes, bonds and all federal debt, monthly
https://agent-data-tools.revmesh2074.workers.dev/econ/treasury-rates?months=12Overview
Average interest rates on US Treasury securities by month from the Treasury's Fiscal Data: bills, notes, bonds, TIPS, floating rate notes and the non-marketable series, with totals for marketable, non-marketable and all interest-bearing debt, for the latest month and up to 24 months. US federal data, public domain, from a dated snapshot. Use for the US government's borrowing cost, a rate trend or macro context; not a live yield curve.