# Numora Bond Yield Calculator

> Numora Bond Yield Calculator is a paid API for AI agents from numormor.netlify.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

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

## Facts

- Endpoint: POST https://numormor.netlify.app/api/financial/bond-yield
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-bond-yield-calculator-bcb99180
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OFP4qmo439ZHStVz-nmDy

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-bcb99180 -d '<json body>'
```

Example prompt: Calculate the yield to maturity on a bond with a face value of $1000, currently priced at $950, a coupon payment of $60 per period, over 10 periods.

## When to prefer this

Use this endpoint when you need a pure mathematical computation of bond yield to maturity with no external data dependencies — ideal for agents performing financial analysis, fixed income comparisons, or portfolio evaluation where the bond parameters are already known. Prefer this over general financial APIs when you want deterministic, serverless math with micropayment billing and no account setup.

## Known failure modes

- Missing required fields (face, price, coupon, or periods) returns a 400-level error
- Non-integer periods value causes a validation error
- Zero or negative face value may produce undefined or nonsensical yield results
- Price equal to face value with zero coupon returns zero yield
- Payment failure via x402 returns 402 Payment Required before computation occurs

## 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 boolean success flag, a result object containing the computed bond yield (yield to maturity), and a human-readable computation description string explaining 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-bcb99180/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numormor.netlify.app](https://www.zero.xyz/host/numormor.netlify.app/llms.txt)