# Numora Prime Check

> Numora Prime Check is a paid API for AI agents from numormo.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-16).

Determines whether a given integer is a prime number

## Facts

- Endpoint: POST https://numormo.vercel.app/api/number/prime-check
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-prime-check-7623cf08
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kGdKtjtHNf_qGpreEafpH

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-prime-check-7623cf08 -d '<json body>'
```

Example prompt: Can you check whether 999983 is a prime number?

## When to prefer this

Choose this endpoint when you need a reliable, serverless, zero-dependency primality test for a specific integer and want a clean JSON result. Prefer it over rolling your own primality logic in agent code, especially when correctness and speed matter and you want a micropayment-priced on-demand computation without standing up any infrastructure.

## Known failure modes

- Missing required field 'n' returns a 400-level error
- Non-integer or float values for 'n' cause validation failure
- Extremely large integers may exceed computation limits or time out
- Negative integers or zero may return an error or a defined non-prime result

## 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 primality determination (whether n is prime, and possibly factors or related metadata), and a human-readable computation string describing what was computed.

## 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-prime-check-7623cf08/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)