# PennyRail Random Secure Bytes Generator

> PennyRail Random Secure Bytes Generator is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status down (last checked 2026-10-23).

Generates cryptographically secure random bytes via a paid micro-transaction API endpoint

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/utility.random-secure--random-bytes?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-random-secure-bytes-generator-c46e7f74
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1H7v3W31tueyW1WmbcLts

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-random-secure-bytes-generator-c46e7f74 -d '<json body>'
```

Example prompt: Generate a batch of cryptographically secure random bytes for me using PennyRail — I need them to create a secure nonce for an encryption operation.

## When to prefer this

Choose this endpoint when you need cryptographically secure random bytes via a simple paid API call, especially in agentic or automated pipelines where integrating a native crypto library is impractical and a micro-payment model ($0.001 USDC) is acceptable. Prefer this over free randomness APIs when you need verifiable secure entropy delivered over HTTP.

## Known failure modes

- Payment failure (x402 payment not accepted or insufficient USDC balance)
- Empty or malformed input object causing schema validation error
- Service unavailable on Vercel deployment (503/504)
- Undocumented required fields in input object leading to unexpected errors
- Rate limiting or quota exhaustion

## How this service works

Machine-readable settlement service

## Output

Returns a JSON object containing cryptographically secure random bytes or equivalent random data, suitable for use in security-sensitive contexts such as key generation, nonces, salts, or tokens.

## 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-random-secure-bytes-generator-c46e7f74/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)