# U.S. Treasury Yield Curve Data

> U.S. Treasury Yield Curve Data is a paid API for AI agents from www.x402pulse.dev, paid per call via x402, $0.00875/call, status unknown (last checked 2026-10-10).

Returns the latest daily U.S. Treasury yields across all maturities (1M–30Y), key spreads (10Y-2Y, 10Y-3M), inversion flags, and day/month/year-over-year changes.

## Facts

- Endpoint: GET https://www.x402pulse.dev/v1/wallstreet/yield-curve?utm_source=zero.xyz
- Price: $0.00875/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/u-s-treasury-yield-curve-data-4bcaeef1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V1Ip-ABoJ92SmenhAIagT

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 u-s-treasury-yield-curve-data-4bcaeef1
```

Example prompt: Pull today's U.S. Treasury yield curve data — I want to see yields from 1-month to 30-year, the 10Y-2Y and 10Y-3M spreads, whether the curve is inverted, and how yields have changed versus yesterday, a month ago, and a year ago.

## When to prefer this

Choose this endpoint when you need a single, ready-to-use snapshot of the entire U.S. Treasury yield curve with recession-signal flags and multi-horizon change data already computed. It eliminates the need to hit multiple Federal Reserve or Treasury data feeds and manually calculate spreads or inversions. Ideal for macro dashboards, economic monitoring agents, or any workflow where yield curve inversion is a key signal.

## Known failure modes

- Treasury market closed (weekends/holidays) may result in stale or unavailable data
- Upstream data source delay may cause temporary unavailability
- Payment failure (insufficient USDC balance) results in 402 response
- Rate limiting if fair-use thresholds exceeded without Pro subscription

## How this service works

Pay-per-call data for AI agents: skill-ranked Polymarket traders, FDA drug and hospital data, oil markets, Wikipedia attention, travel delay risk and SEC filings, plus a daily Morning Brief. Paid in USDC on Base with x402, no API key or account.

## Output

Returns a structured dataset including: current daily yields for all standard Treasury maturities (1M, 3M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 20Y, 30Y), the 10Y-2Y and 10Y-3M spreads, boolean inversion flags for each spread, and yield changes versus the prior day, one month ago, and one year ago.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "date": "2026-10-06",
   "inverted": {
    "10Y-2Y": false,
    "10Y-3M": false
   },
   "spreadsBp": {
    "10Y-2Y": 48,
    "10Y-3M": 106
   },
   "yieldsPct": {
    "2 Yr": 4.79,
    "3 Mo": 4.21,
    "10 Yr": 5.27
   }
  },
  "cached": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/u-s-treasury-yield-curve-data-4bcaeef1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x402pulse.dev](https://www.zero.xyz/host/www.x402pulse.dev/llms.txt)