# x402-toolbox String Reverse

> x402-toolbox String Reverse is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Reverses the characters of a given input string, returning the mirror-image of the text.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/text/string-reverse?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-string-reverse-250626d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h8rm7hjBJUzoUdQgxLr5f

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 x402-toolbox-string-reverse-250626d0
```

Example prompt: Can you reverse the string 'Hello, World!' for me?

## When to prefer this

Choose this endpoint when you need a quick, serverless, pay-per-call string reversal without any signup or API key overhead. It is ideal for AI agent pipelines needing a lightweight deterministic text utility billed in micro-USDC on Base.

## Known failure modes

- Empty or missing input string returns an error or empty result
- Extremely long strings may be truncated or rejected
- Payment failure via x402 results in 402 response and no transformation
- Non-string or malformed schema input may return an error

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok: true, paid: true, and the reversed version of the input string as a result field.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-string-reverse-250626d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)