# Numora Bond Yield Calculator

> Numora Bond Yield Calculator is a paid API for AI agents from numomo.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 its face value, market price, coupon payment, and number of periods

## Facts

- Endpoint: POST https://numomo.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-905af594
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dBvRoWaXRWQ-aeHpkDgMu

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-905af594 -d '<json body>'
```

Example prompt: Calculate the yield to maturity on a bond with a face value of $1,000, currently priced at $950, a coupon payment of $50, and 10 remaining periods.

## When to prefer this

Choose this endpoint when you need a pure, serverless mathematical computation of bond yield-to-maturity with no external data dependencies — ideal when you already have the bond parameters and need fast, deterministic financial math without connecting to a market data provider or brokerage API.

## Known failure modes

- Missing required fields (face, price, coupon, periods) returns a validation error
- Non-integer 'periods' value causes a schema error
- Price of zero causes a division error in YTM formula
- Negative face or coupon values may produce nonsensical or error results
- Payment failure via x402 micropayment returns a 402 status before computation begins

## 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' boolean, a 'result' object containing the computed bond yield (yield-to-maturity as a decimal or percentage), and a 'computation' string with a human-readable description of the calculation performed.

## 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-905af594/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numomo.vercel.app](https://www.zero.xyz/host/numomo.vercel.app/llms.txt)