# Numora Mortgage Payment Calculator

> Numora Mortgage Payment Calculator is a paid API for AI agents from numorapoi.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Computes monthly mortgage payment and amortization details given a loan principal, annual interest rate, and loan term in months

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/mortgage
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-mortgage-payment-calculator-da1efec3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3t1uWgMV3Nbe6RB3fXTm9

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-mortgage-payment-calculator-da1efec3 -d '<json body>'
```

Example prompt: Calculate my monthly mortgage payment for a $450,000 home loan at 6.75% annual interest rate over 30 years (360 months).

## When to prefer this

Use this endpoint when you need a fast, dependency-free, server-side calculation of a fixed-rate mortgage monthly payment. Prefer it over client-side JS math when you need a verified computation result with a human-readable description. Ideal for AI agents that need precise financial math without building their own formula logic.

## Known failure modes

- Missing required fields (rate, months, principal) returns a 400-level error
- Non-positive principal or rate values may produce invalid mathematical results
- Zero months causes division-by-zero type errors
- Payment required (402) if x402 micropayment header is missing or insufficient
- Non-numeric inputs for rate or principal may cause schema validation failure

## 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 human-readable computation description, and a result object containing the computed mortgage payment details such as monthly payment amount and amortization breakdown.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "rate",
  "months",
  "principal"
 ],
 "properties": {
  "rate": {
   "type": "number"
  },
  "months": {
   "type": "integer"
  },
  "principal": {
   "type": "number"
  }
 }
}
```

## 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-mortgage-payment-calculator-da1efec3/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)