# ONE Engine ASCII Fold Text Normalizer

> ONE Engine ASCII Fold Text 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).

Converts text to ASCII by folding/removing non-ASCII characters (accents, diacritics, special symbols) up to 50,000 characters.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/ascii-fold/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-ascii-fold-text-normalizer-5a0f6875
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SSWtkGvHMKjrHp0ClippE

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-ascii-fold-text-normalizer-5a0f6875 -d '<json body>'
```

Example prompt: Take this text and fold it down to plain ASCII — strip out all the accented characters, umlauts, and special symbols so it works in ASCII-only systems: 'Héllo wörld, naïve café résumé'

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call ASCII normalization operation without setting up your own Unicode library — ideal for agents that occasionally need to sanitize text for ASCII-only downstream systems, generate URL slugs, or clean user input with diacritics. Best for one-off or low-volume conversions where integrating a full Unicode library is overkill.

## Known failure modes

- Text exceeding 50,000 characters may be rejected or truncated
- Payment failure via x402 if insufficient USDC balance on Base
- Malformed JSON request body returns an error
- Some exotic Unicode characters may be stripped entirely rather than folded if no ASCII equivalent exists

## 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 ASCII-folded version of the input text, where non-ASCII characters (accented letters, diacritics, ligatures, special symbols) have been converted to their closest ASCII equivalents or removed.

## 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-ascii-fold-text-normalizer-5a0f6875/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)