# ONE Engine Text Whitespace Normalizer

> ONE Engine Text Whitespace Normalizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-02).

Normalizes whitespace in a given text string, cleaning up irregular spacing, tabs, and line breaks.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/whitespace/t4?utm_source=zero.xyz
- Price: $0.0015/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-whitespace-normalizer-69b8af4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IuOYZFxEEMm7dRySS-am4

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-whitespace-normalizer-69b8af4f -d '<json body>'
```

Example prompt: Can you clean up the whitespace in this text for me? It has a bunch of irregular spaces, tabs, and extra line breaks that I need standardized: 'Hello   world,		this   is   a   test.'

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call whitespace normalization step in an automated pipeline without spinning up your own text preprocessing service. Ideal for agents that occasionally need to clean text as part of a larger workflow and want to pay only for what they use at $0.0015 USDC per call.

## Known failure modes

- Text exceeds 50000 character limit — request rejected
- Empty text field — may return error or empty result
- Payment failure via x402 protocol — call blocked
- Malformed JSON input — 400 bad request

## How this service works

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

## Output

Returns the input text with whitespace normalized — extra spaces collapsed, irregular tabs and line breaks standardized — as a JSON object containing the cleaned text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text up to 50000 characters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-text-whitespace-normalizer-69b8af4f/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)