# Numora IRR (Internal Rate of Return) Calculator

> Numora IRR (Internal Rate of Return) Calculator is a paid API for AI agents from numormo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Computes the Internal Rate of Return (IRR) for a series of cash flows using pure math computation with no external dependencies

## Facts

- Endpoint: POST https://numormo.vercel.app/api/financial/irr
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-irr-internal-rate-of-return-calculator-00835de0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oAvkW-CS0opf2mo_7prtL

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-irr-internal-rate-of-return-calculator-00835de0 -d '<json body>'
```

Example prompt: Calculate the IRR for an investment that starts with -$100,000 and then returns $30,000, $40,000, $35,000, and $25,000 over the next four years.

## When to prefer this

Choose this endpoint when you need a fast, dependency-free IRR calculation for investment or project cash flow analysis, particularly in agent workflows where you want a reliable numeric result without connecting to a financial data provider or spreadsheet service. Ideal for on-the-fly capital budgeting, comparing investment options, or validating financial models in real time.

## Known failure modes

- No real IRR exists if cash flows never change sign — returns error or NaN
- IRR fails to converge if cash flows have multiple sign changes (multiple IRR problem)
- Empty or single-element cashflows array may return validation error
- Non-numeric values in the cashflows array will cause computation failure
- All-positive or all-negative cash flow arrays have no valid IRR solution

## 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' field, a 'result' object containing the computed IRR value (typically expressed as a decimal or percentage), and a 'computation' string providing a human-readable description of what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "cashflows"
 ],
 "properties": {
  "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-irr-internal-rate-of-return-calculator-00835de0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numormo.vercel.app](https://www.zero.xyz/host/numormo.vercel.app/llms.txt)