# PennyRail UUID Generator

> PennyRail UUID Generator is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Generates a universally unique identifier (UUID) on demand via a paid micro-transaction API endpoint

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/utility.uuid-generate--uuid-generator
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-uuid-generator-99d9a558
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QtitDd2EasVkH_MIum2jj

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 pennyrail-uuid-generator-99d9a558 -d '<json body>'
```

Example prompt: Generate a fresh UUID for me — I need a unique identifier to assign to a new database record I'm creating.

## When to prefer this

Choose this endpoint when you need a pay-per-call, on-demand UUID generation within an x402 micropayment-enabled agent workflow. It is particularly suited for agents that already operate within the PennyRail/x402 payment rail ecosystem and need lightweight utility functions without standing up their own UUID generation logic.

## Known failure modes

- Payment not received or insufficient USDC balance — endpoint returns 402 Payment Required
- Malformed input object causes request rejection
- Service unavailability on Vercel hosting — returns 503 or timeout
- Empty or missing 'input' field in request body — returns 400 or validation error

## How this service works

Machine-readable settlement service

## Output

Returns an object containing a generated UUID string, suitable for use as a unique identifier in databases, distributed systems, or any context requiring a collision-resistant random ID.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-uuid-generator-99d9a558/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)