# ONE Engine Text Reverse

> ONE Engine Text Reverse 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).

Reverses a given string of text, returning the characters in reversed order.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/text/reverse?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-text-reverse-f16a4e46
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OqpOlMui3yKm9C5QKQgzR

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-text-reverse-f16a4e46 -d '<json body>'
```

Example prompt: Can you reverse the text 'Hello World' for me?

## When to prefer this

Choose this endpoint when you need a fast, cheap, pay-per-call string reversal without standing up your own infrastructure. Ideal for autonomous agents that occasionally need text reversal as a utility step and want to pay micro-fractions per call via x402 on Base rather than maintaining a dependency on a full NLP or text-processing library.

## Known failure modes

- Missing 'text' field in request body returns an error
- Empty string input may return an empty string
- Non-string input types may cause a validation error
- Payment failure via x402 results in 402 response before processing

## How this service works

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

## Output

A JSON object containing a single field 'text' with the reversed version of the input string (e.g., input 'ONE' returns 'ENO').

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "ENO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-text-reverse-f16a4e46/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)