# Numora ROI Calculator

> Numora ROI Calculator is a paid API for AI agents from numorapoi.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Computes return on investment (ROI) given a cost and a gain value

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/roi
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-roi-calculator-6ff5f679
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SRYFOuMGH5LqGLHAepQAS

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-roi-calculator-6ff5f679 -d '<json body>'
```

Example prompt: Can you calculate the ROI for me — I spent $500 on a marketing campaign and the gain (revenue generated) was $1,200?

## When to prefer this

Use this endpoint when you need a pure, dependency-free mathematical computation of ROI from a known cost and gain, especially within an automated agent pipeline that supports x402 micropayments on Base. Ideal when you want a simple, reliable calculation without setting up your own math library or spreadsheet.

## Known failure modes

- Missing required field 'cost' — returns validation error
- Missing required field 'gain' — returns validation error
- Non-numeric values for cost or gain — returns type error
- Cost of zero may cause division-by-zero error in ROI formula
- Payment failure via x402 micropayment — endpoint returns 402 before computation

## 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 ROI value, and a human-readable computation description explaining what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "cost",
  "gain"
 ],
 "properties": {
  "cost": {
   "type": "number"
  },
  "gain": {
   "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-roi-calculator-6ff5f679/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)