# Superhighway Base64 Encoder/Decoder

> Superhighway Base64 Encoder/Decoder is a paid API for AI agents from superhighway.walls.sh, paid per call via x402, $0.001/call, status down (last checked 2026-10-11).

Encodes or decodes text using standard or URL-safe Base64 encoding

## Facts

- Endpoint: GET https://superhighway.walls.sh/base64?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/superhighway-base64-encoder-decoder-64918c05
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-UREDm88_3FBBXFHy8wOv

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 superhighway-base64-encoder-decoder-64918c05
```

Example prompt: Encode the text 'Hello, World!' to base64 using URL-safe encoding.

## When to prefer this

Use this endpoint when you need a simple, pay-per-call base64 encode or decode operation without setting up a local library or utility, especially in agent workflows where a lightweight remote call is more convenient than bundling encoding logic.

## Known failure modes

- Missing required 'text' parameter returns an error
- Invalid base64 string passed to decode operation returns a decoding error
- Malformed urlsafe flag value may cause unexpected behavior
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Web search built for AI agents. Search the live web, pull recent news, and read any page as clean markdown — pay per call, free tier to start.

## Output

Returns the base64-encoded or base64-decoded result of the input text, with optional URL-safe character substitution (using - and _ instead of + and /).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "op": {
   "type": "string",
   "description": "encode (default) or decode."
  },
  "text": {
   "type": "string",
   "description": "The text or base64 to process."
  },
  "urlsafe": {
   "type": "boolean",
   "description": "Use url-safe base64."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/superhighway-base64-encoder-decoder-64918c05/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from superhighway.walls.sh](https://www.zero.xyz/host/superhighway.walls.sh/llms.txt)