# 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, $0.0065/call, status unknown (last checked 2026-10-02).

Converts Unicode text to its ASCII-folded equivalent by replacing or mapping non-ASCII characters to their closest ASCII representations.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/ascii-fold/t7?utm_source=zero.xyz
- Price: $0.0065/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-5d9a727a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KOgudOl4-aqsIV24QBfjv

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-5d9a727a -d '<json body>'
```

Example prompt: Normalize this text to ASCII by folding all accented and special Unicode characters into their closest ASCII equivalents: 'Héllo Wörld — naïve café résumé Ångström'

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call ASCII folding operation without standing up your own Unicode normalization library. Ideal for AI agents that occasionally need to sanitize text for ASCII-only downstream systems, search indexes, or deduplication pipelines without wanting a full NLP service. At $0.0065 per call it is cost-effective for low-to-medium volume sporadic agent tasks.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected with validation error
- Empty text field — may return empty string or validation error
- Payment not included or insufficient USDC — 402 Payment Required response
- Network timeout on Cloudflare Worker edge — transient 5xx error
- Characters with no ASCII equivalent may be dropped or replaced with placeholders

## 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 Unicode characters with diacritics or special marks are mapped to their closest ASCII equivalents (e.g. 'é' → 'e', 'ü' → 'u', 'ø' → 'o'), making the text safe for ASCII-only contexts.

## 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-5d9a727a/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)