Vellium & Co

Directory › DeFi markets (yields, perps, funding) › SEC, Treasury & Agent Utilities

SEC, Treasury & Agent Utilities

US Treasury par yield curve, every constant maturity from 1 month to 30 years for a published business day. Returns curve[] with tenor, months and percent, spreads (2s10s, 3m10y, 5s30s) and an explicit inversion flag - the real question is

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
335 ms
Price
$0.030 per call
Paying buyers, last 30 days
1 (directory's own records)
Paid calls, last 30 days
4
Category
DeFi markets (yields, perps, funding)
Address
https://x402.donnyautomation.com/treasury

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/ef559bde03d2.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].