# PennyRail Base64 Decode

> PennyRail Base64 Decode is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Decodes a Base64-encoded string back into its original plaintext representation

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/f/encoding.base64-decode
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-base64-decode-cc483e29
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7MOgFQkdItBgGZNRmtNRM

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-base64-decode-cc483e29 -d '<json body>'
```

Example prompt: Can you decode this Base64 string for me: 'SGVsbG8sIFdvcmxkIQ=='?

## When to prefer this

Choose this endpoint when you need a simple, pay-per-use Base64 decoding operation without setting up your own decoding library or runtime. Useful in agent pipelines where an external or serverless utility call is preferred, or when handling Base64-encoded data in a workflow that already uses x402 micropayment infrastructure.

## Known failure modes

- Invalid Base64 input (malformed or padded incorrectly) returns an error or garbage output
- Empty input string may return an error or empty result
- Binary/non-UTF8 decoded content may not render as readable text
- Network or service unavailability returns a 5xx error
- Missing required 'input' field returns a 400 validation error

## How this service works

Machine-readable settlement service

## Output

Returns a JSON object with an 'operation' field (e.g. 'base64-decode') confirming what was performed, and a 'result' field containing the decoded plaintext string recovered from the Base64 input.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "operation",
  "result"
 ],
 "properties": {
  "result": {},
  "operation": {
   "type": "string"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-base64-decode-cc483e29/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)