# Numora Simple Interest Calculator

> Numora Simple Interest 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 simple interest for a given principal, rate, and number of periods using pure math computation with no external dependencies

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/simple-interest
- 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-simple-interest-calculator-60698263
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E7VTo_vIrB3dr79a56hlK

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-simple-interest-calculator-60698263 -d '<json body>'
```

Example prompt: What's the simple interest on a $5000 principal at an annual rate of 6% over 3 periods?

## When to prefer this

Choose this endpoint when you need a pure server-side computation of simple interest (I = P × r × t) with no external data dependencies, no compounding, and deterministic results. Ideal for financial agents that need reliable math computation without building their own formula logic, especially when compound interest or amortization is not required.

## Known failure modes

- Missing required fields (principal, rate, or periods) returns a validation error
- Non-numeric values for rate, periods, or principal cause a type error
- Negative or zero principal may return an unexpected or error result
- Payment failure via x402 micropayment protocol blocks the request
- Server unavailable at orbonomy.xyz domain returns a connection error

## 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 'result' object containing the computed simple interest value, a 'computation' string describing what was calculated in human-readable form, and a 'success' boolean confirming the computation completed successfully.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "rate",
  "periods",
  "principal"
 ],
 "properties": {
  "rate": {
   "type": "number"
  },
  "periods": {
   "type": "number"
  },
  "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-simple-interest-calculator-60698263/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)