# Numora Financial Lease Math API

> Numora Financial Lease Math API 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 lease vs. buy financial comparisons using pure math with zero external dependencies, paid via x402 micropayments.

## Facts

- Endpoint: POST https://numormo.vercel.app/api/financial/lease
- 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-financial-lease-math-api-9629d2b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dset24NhTI0ZAcsU2nPyY

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-financial-lease-math-api-9629d2b1 -d '<json body>'
```

Example prompt: Can you run a lease vs buy comparison for me? The car costs $35,000, I'd put $3,000 down with a 5-year loan at 6% interest if buying, or lease it for 36 months at $450/month with a $2,000 residual.

## When to prefer this

Choose this endpoint when you need deterministic, server-side financial math for a lease vs buy comparison without relying on spreadsheet tools or external financial APIs. Ideal for AI agents that need a trustworthy numeric result with no side effects, especially when the computation must be auditable and reproducible. Prefer this over general-purpose LLM math when precision and consistency matter.

## Known failure modes

- Missing required buyParams or leaseParams fields returns a validation error
- Invalid numeric values (e.g. negative interest rates) may cause computation errors
- Malformed JSON body returns 400 error
- Payment failure via x402 protocol prevents endpoint access
- Incomplete parameter objects may return null or partial results

## 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 success flag, a human-readable computation description, and a result object containing computed financial metrics such as total lease cost, total buy cost, monthly payments for both options, net present value comparisons, and a recommendation or break-even analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "buyParams",
  "leaseParams"
 ],
 "properties": {
  "buyParams": {
   "type": "object"
  },
  "leaseParams": {
   "type": "object"
  }
 }
}
```

## 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-financial-lease-math-api-9629d2b1/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)