# Numora Fibonacci Number Generator

> Numora Fibonacci Number Generator 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 nth Fibonacci number given an integer index n

## Facts

- Endpoint: POST https://numormo.vercel.app/api/number/fibonacci
- 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-fibonacci-number-generator-489d5feb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xmxQc3h5VDckZoVyiNOvb

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-fibonacci-number-generator-489d5feb -d '<json body>'
```

Example prompt: What is the 75th Fibonacci number? Use a pure math computation API to calculate the exact integer value.

## When to prefer this

Choose this endpoint when you need an exact, server-computed Fibonacci number at a specific index without writing or running your own code, especially in agent pipelines that require deterministic math results. Prefer this over LLM-generated math when precision matters for large n values.

## Known failure modes

- Missing required field 'n' returns a 400-style error
- Non-integer or negative n may return an error or undefined behavior
- Extremely large n may cause timeout or overflow depending on server limits
- Payment failure via x402 micropayment protocol returns a 402 Payment Required response

## 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 Fibonacci number at position n, and a 'computation' string describing in human-readable terms what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "n"
 ],
 "properties": {
  "n": {
   "type": "integer"
  }
 }
}
```

## 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-fibonacci-number-generator-489d5feb/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)