# ONE Engine Text Normalize Control Clean

> ONE Engine Text Normalize Control Clean is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-16).

Normalizes and cleans text by removing control characters and applying text normalization transformations.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/control-clean/t1?utm_source=zero.xyz
- Price: $0.0005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-text-normalize-control-clean-8e8d6a32
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B__M4b4zNqTdHpB30S3jJ

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-normalize-control-clean-8e8d6a32 -d '<json body>'
```

Example prompt: Clean this text by removing all control characters and normalizing it: 'Hello
World	 — there are some weird invisible characters in here that need to be stripped out.'

## When to prefer this

Choose this endpoint when you need a lightweight, low-cost ($0.0005 USDC) per-call text cleaning operation specifically targeting control characters and normalization. Ideal for preprocessing pipelines where text must be sanitized before storage, display, or NLP processing. Prefer this over general-purpose LLM-based cleaning when you want deterministic, fast, and cheap programmatic normalization without AI inference overhead.

## Known failure modes

- Text exceeds 50000 character limit — request rejected with error
- Empty text field provided — may return error or empty result
- Payment not provided or insufficient — 402 Payment Required response blocking access
- Malformed JSON body — 400 Bad Request
- Network timeout on the Cloudflare Workers edge — transient 5xx error

## How this service works

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

## Output

Returns a JSON object containing the normalized and cleaned version of the input text, with control characters removed and text normalization applied. The response schema is open (additionalProperties: true), so may include the cleaned text field and potentially metadata about what was changed.

## 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-normalize-control-clean-8e8d6a32/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)