# PROWL US Treasury Yield Curve

> PROWL US Treasury Yield Curve is a paid API for AI agents from www.prowldata.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns current US Treasury yield curve rates (1-month through 30-year), including the 10Y-2Y spread and whether the yield curve is currently inverted.

## Facts

- Endpoint: POST https://www.prowldata.dev/api/v1/macro/yields
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/www-prowldata-dev-71dcdab1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M6KpY8Kj0f1cHDmOTUHtS

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability www-prowldata-dev-71dcdab1 -d '<json body>'
```

Example prompt: Is the US Treasury yield curve inverted right now? Give me the full yield curve from 1-month to 30-year and tell me what the 10Y-2Y spread is.

## When to prefer this

Use this endpoint when you need current US Treasury yield rates across the full maturity spectrum, specifically when the user is asking about yield curve inversion, recession signals, or wants to compare short-term vs long-term government borrowing rates. Prefer this over generic financial data APIs when you need the 10Y-2Y spread and inversion status pre-computed.

## Known failure modes

- Treasury data feed unavailable — upstream data source outage
- Rate limit or payment failure — x402 payment not processed correctly
- Stale data — yield data may be delayed outside market hours
- Empty response if Treasury market is closed on weekends/holidays

## How this service works

US Treasury yield curve -1-month through 30-year rates. Detect yield curve inversions that historically predict recessions. Includes current spread (10Y-2Y) and inversion status. Powered by PROWL. Use this to answer 'is the yield curve inverted?' or 'what are current treasury rates?'

## Output

Returns a full set of current US Treasury yields from 1-month through 30-year maturities, the current 10Y-2Y spread value, and a boolean or status flag indicating whether the yield curve is currently inverted — a historically significant recession predictor.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/www-prowldata-dev-71dcdab1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.prowldata.dev](https://www.zero.xyz/host/www.prowldata.dev/llms.txt)