# Delx Text Reverse

> Delx Text Reverse is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-21).

Reverses a text string and returns the result as deterministic JSON for use in testing and transformation pipelines

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/text-reverse?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-text-reverse-960a8226
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U9Qv4mzIdP2lC4n1nLu3z

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 delx-text-reverse-960a8226 -d '<json body>'
```

Example prompt: Can you reverse the string 'Hello, World!' for me using the Delx text reverse utility and give me back the result as JSON?

## When to prefer this

Choose this endpoint when you need a fast, cheap, deterministic string reversal with a guaranteed JSON response — ideal for agent preflight checks, test fixture generation, and pipeline validation where reproducibility matters. At $0.001 USDC it is well-suited for high-frequency utility calls in automated workflows. Prefer it over a custom implementation when you want a stateless, no-retention micro-utility with a consistent API contract.

## Known failure modes

- Missing or empty 'text' field in the request body returns an error response
- Malformed JSON request body causes a 400-level error
- Payment not fulfilled via x402 protocol results in a 402 Payment Required response
- Overly large input strings may exceed size limits and return an error

## How this service works

Reverse a text string to build a replayable transformation fixture. Call when you need this bounded result before handing data to a downstream tool. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Honest limit: execution uses only caller-supplied data in memory; it does not call a paid upstream, retain input, search the web, read a live RPC, or invoke a media generator. Results are advisory; the caller owns authorization, budgets, and production controls.

## Output

A deterministic JSON object containing the reversed version of the input text string. The response is machine-readable, stateless, and produced locally with no upstream dependencies or data retention.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Input field: text."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "xled",
  "length": 4,
  "schema": "delx/util-text-reverse/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-text-reverse-960a8226/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)