# Numora Bond Yield Calculator

> Numora Bond Yield Calculator is a paid API for AI agents from numormo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

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

## Facts

- Endpoint: POST https://numormo.vercel.app/api/financial/bond-yield
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-bond-yield-calculator-038b3135
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ioaxb_cCREb5EWMpUeC01

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-038b3135 -d '<json body>'
```

Example prompt: Calculate the yield to maturity on a bond with a face value of $1,000, currently priced at $950, paying a $40 coupon each period, over 10 periods.

## When to prefer this

Choose this endpoint when you need a pure mathematical computation of bond yield to maturity without relying on external market data feeds or financial APIs. Ideal for agents performing fixed-income analysis, portfolio valuation, or financial education tasks where the bond parameters are already known and a clean numeric result is needed. Best when operating in a zero-dependency environment with micropayment billing via x402 on Base.

## Known failure modes

- Missing required fields (face, price, coupon, or periods) returns a validation error
- Negative or zero periods may produce a mathematical error or undefined result
- Price of zero causes division-by-zero or domain error
- Non-numeric inputs for numeric fields return schema validation failure
- Server-side computation error returns success: false with error details

## 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 a 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-038b3135/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numormo.vercel.app](https://www.zero.xyz/host/numormo.vercel.app/llms.txt)