# Numora Net Present Value (NPV) Calculator

> Numora Net Present Value (NPV) Calculator is a paid API for AI agents from numorapoi.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Computes the Net Present Value (NPV) of a series of cash flows given a discount rate, using pure server-side math with no external dependencies.

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/npv
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-net-present-value-npv-calculator-5425a6b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uy3gedMPHk1T1IVL9m503

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-net-present-value-npv-calculator-5425a6b4 -d '<json body>'
```

Example prompt: Calculate the net present value of a project with a discount rate of 8% and cash flows of [-50000, 15000, 18000, 22000, 20000, 17000] — I want to know if this investment makes financial sense.

## When to prefer this

Use this endpoint when you need a fast, dependency-free, server-side NPV computation without invoking a general-purpose code interpreter or spreadsheet tool. Ideal for AI agents performing financial analysis, capital budgeting, or investment evaluation where a lightweight micropayment-gated math API is acceptable and no external data sources are required.

## Known failure modes

- Missing required field 'rate' returns a validation error
- Missing required field 'cashflows' returns a validation error
- Non-numeric rate value causes a type error
- Empty cashflows array may return zero or an error
- Payment not provided or insufficient USDC causes x402 payment-required response
- Malformed JSON body returns a 400 bad request

## 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 NPV value, and a human-readable computation string describing what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "rate",
  "cashflows"
 ],
 "properties": {
  "rate": {
   "type": "number"
  },
  "cashflows": {
   "type": "array"
  }
 }
}
```

## 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-net-present-value-npv-calculator-5425a6b4/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)