# Services from treasury-yield-curve.x402supply.com on Zero

> treasury-yield-curve.x402supply.com serves 2 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/treasury-yield-curve.x402supply.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/treasury-yield-curve.x402supply.com/health.json

## Services

- [Treasury Yield Curve History (x402 Supply)](https://www.zero.xyz/c/treasury-yield-curve-history-x402-supply-5dffd4cf/llms.txt): $0.005/call via x402. Returns US Treasury par yield curve data (1mo to 30yr maturities, in percent) for a range of business days between a start and end date.
- [US Treasury Par Yield Curve API](https://www.zero.xyz/c/us-treasury-par-yield-curve-api-31fddfb7/llms.txt): $0.005/call via x402. Returns the US Treasury par yield curve rates (1-month to 30-year maturities, in percent) for a specified date or the latest available trading day

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)