# Numora Fibonacci Number Generator

> Numora Fibonacci Number Generator is a paid API for AI agents from numomo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Computes the nth Fibonacci number in the sequence using pure mathematical calculation with no external dependencies

## Facts

- Endpoint: POST https://numomo.vercel.app/api/number/fibonacci
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-fibonacci-number-generator-327e10dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LGS1dcJiLKM1C1s5aVSJf

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-327e10dc -d '<json body>'
```

Example prompt: What is the 47th Fibonacci number? Use Numora's pure math API to calculate it exactly.

## When to prefer this

Choose this endpoint when you need a precise, server-side Fibonacci computation without implementing the algorithm yourself, especially for large n values where local computation or LLM estimation may be unreliable. It is preferable over general-purpose code execution services when you want a zero-dependency, auditable pure math result with a predictable response schema. Particularly useful in agentic workflows where mathematical correctness is critical.

## Known failure modes

- Missing required field 'n' returns a validation error
- Non-integer or float value for 'n' may return an error or unexpected result
- Very large values of 'n' may cause computation timeout or overflow
- Payment failure via x402 micropayment will block the request
- Negative integers for 'n' may return an error or undefined behavior

## 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 value at position n, and a 'computation' string that is a human-readable description of what was computed (e.g. 'The 10th Fibonacci number is 55').

## 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-327e10dc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numomo.vercel.app](https://www.zero.xyz/host/numomo.vercel.app/llms.txt)