# Numora Bond Yield Calculator

> Numora Bond Yield Calculator is a paid API for AI agents from numorapoi.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).

Computes the yield to maturity (YTM) of a bond given its face value, current price, coupon payment, and number of periods

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/bond-yield
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-bond-yield-calculator-28396e18
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zW_dQCPIXk8_17AY7eSE5

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 numora-bond-yield-calculator-28396e18 -d '<json body>'
```

Example prompt: Calculate the yield to maturity for a bond with a face value of $1000, currently priced at $950, a coupon payment of $50, over 10 periods.

## When to prefer this

Choose this endpoint when you need a pure server-side numerical computation of bond yield to maturity without any market data lookup or external data dependencies. Ideal for agents performing fixed income math on known bond parameters without needing live pricing feeds.

## Known failure modes

- Missing required fields (face, price, coupon, periods) returns 400 error
- Non-numeric inputs cause validation failure
- Periods must be a positive integer; zero or negative values may cause error
- Bond price of zero causes division-by-zero or invalid result
- Payment failure via x402 micropayment returns 402 Payment Required

## How this service works

100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.

## Output

Returns a JSON object with success flag, a result object containing the computed bond yield (yield to maturity as a decimal or percentage), and a human-readable computation string describing what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "face",
  "price",
  "coupon",
  "periods"
 ],
 "properties": {
  "face": {
   "type": "number"
  },
  "price": {
   "type": "number"
  },
  "coupon": {
   "type": "number"
  },
  "periods": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success",
  "result",
  "computation"
 ],
 "properties": {
  "result": {
   "type": "object",
   "description": "Computation result varies by endpoint"
  },
  "success": {
   "type": "boolean",
   "description": "Always true on success"
  },
  "computation": {
   "type": "string",
   "description": "Human-readable description of what was computed"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numora-bond-yield-calculator-28396e18/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numorapoi.orbonomy.xyz](https://www.zero.xyz/host/numorapoi.orbonomy.xyz/llms.txt)