# Orders of Magnitude Bond Yields API

> Orders of Magnitude Bond Yields API is a paid API for AI agents from x402-api-production-5133.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Returns current bond yield data for fixed-income securities via a micropayment-gated API endpoint

## Facts

- Endpoint: GET https://x402-api-production-5133.up.railway.app/data/bond-yields?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orders-of-magnitude-bond-yields-api-58ba15db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EtOB3rWYZjnaRfHgJBrat

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 orders-of-magnitude-bond-yields-api-58ba15db
```

Example prompt: Can you pull the current bond yields for me — I want to see today's rates across maturities?

## When to prefer this

Choose this endpoint when you need real-time or near-real-time bond yield data at very low cost ($0.01 USDC per call) and your agent supports the x402 micropayment protocol. It is best suited for applications that need programmatic, on-demand access to fixed-income rate data without a traditional API subscription. Prefer this over scrapers or manual lookups when you want structured, reliable yield data delivered via a pay-per-use model.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- Invalid format parameter value — may return 400 Bad Request or default to JSON
- Upstream data source unavailable — may return 503 or stale data
- Rate limit exceeded — possible 429 response
- Railway hosting cold start may introduce latency on first call

## How this service works

Data and AI services via x402 payment protocol

## Output

Returns current bond yield data for fixed-income securities, likely including yields across various maturities (e.g. 2-year, 5-year, 10-year, 30-year), expressed as percentage rates. The optional format parameter may control whether the response is returned as JSON, CSV, or another structured format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "format": {
   "type": "string",
   "description": "Response format"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orders-of-magnitude-bond-yields-api-58ba15db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-api-production-5133.up.railway.app](https://www.zero.xyz/host/x402-api-production-5133.up.railway.app/llms.txt)