# ONE Engine URL Decode

> ONE Engine URL Decode is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).

Decodes a URL-encoded string back to its original human-readable form.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/url/decode?utm_source=zero.xyz
- Price: $0.0009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-url-decode-eee8f449
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Gd5DuLGVAedZs2Rxq6WL

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 one-engine-url-decode-eee8f449 -d '<json body>'
```

Example prompt: Decode this URL-encoded string for me: 'hello%20world%3F' — I need to see what the original text says.

## When to prefer this

Choose this endpoint when you need a lightweight, low-cost, pay-per-call URL decoding utility without managing infrastructure. It is ideal for autonomous agents operating on the x402/Base payment protocol that need to decode percent-encoded strings on demand as part of a larger workflow, and where a self-hosted or heavy-weight solution would be overkill.

## Known failure modes

- Malformed or invalid percent-encoding in the input may produce unexpected output or an error response
- Missing or empty 'text' field in the request body may return an error or empty result
- Payment failure via x402 protocol may block the request from being processed
- Network timeout on the Cloudflare Workers edge may result in a 5xx response

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object with a 'text' field containing the decoded, human-readable version of the input URL-encoded string (e.g. percent-encoded characters like %20 are converted back to spaces and special characters).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "hello world?"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-url-decode-eee8f449/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)