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x402stock.xyz

The daily US Treasury par yield curve (Constant Maturity Treasury rates) for every maturity from 1 month to 30 years, in percent. Defaults to the latest published day; pass `?limit=` for more recent days (max 250) and `?year=YYYY`. No ticke

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
233 ms
Price
$0.010 per call
Paying buyers, last 30 days
8 (directory's own records)
Paid calls, last 30 days
13
Category
DeFi markets (yields, perps, funding)
Address
https://x402stock.xyz/api/v1/treasury-yields

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/0356b05c8a2a.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].