US Treasury par yield curve (1 month to 30 year, percent) for one date or the latest, with weekend and holiday dates mapped to the prior business day. yield_curve_history returns the curve for every business day in a date range. Data from the U.S. Treasury, not financial advice. Pay-per-call via x402 ($0.005 USDC on Base); initialize and tools/list are free.
Scored across 2 tools
The two tools are cleanly separated by cardinality: yield_curve returns a single date (or latest), while yield_curve_history returns a date range. An agent can pick the right one with no overlap risk, and the description explicitly states the distinction.
Both names use consistent snake_case with a shared 'yield_curve' stem, and the '_history' suffix predictably signals the range variant. The pattern is minimal but perfectly uniform.
Two tools is on the thin side, but the server's scope is a single narrow data series, and snapshot vs. range covers the two natural access patterns. It is well-scoped rather than padded, though a bit more surface (e.g. specific-tenor lookup) could earn a place.
Point-in-time and bounded-range retrieval fully cover the core lifecycle for yield curve data, with helpful notes about weekends/holidays and the 31-day cap. Minor gaps exist — no tenor-level extraction or curve comparison/spread operation — but agents can derive those from the returned curves.
US Treasury par yield curve (1mo to 30yr, percent) for one date, or the latest if omitted. Weekend or holiday dates return the nearest prior business day with a note. Data from U.S. Treasury; not financial advice.
Inputs: date.
US Treasury par yield curves for every business day between startDate and endDate (max 31 calendar days), oldest first. Data from U.S. Treasury; not financial advice.
Inputs: startDate (required), endDate.
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