# ONE Engine ASCII Fold + T9 Text Normalizer

> ONE Engine ASCII Fold + T9 Text Normalizer is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).

Converts text to ASCII-folded and T9-normalized form, stripping accents and mapping characters to T9 keypad equivalents for downstream matching or indexing.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/ascii-fold/t9?utm_source=zero.xyz
- Price: $0.018/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-t9-text-normalizer-2153d727
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w4XZYiJnF_EdWRBDGba8C

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-t9-text-normalizer-2153d727 -d '<json body>'
```

Example prompt: Normalize this product description to ASCII-folded T9 format so I can index it for keypad search: 'Café Müller's crème brûlée — a résumé of flavors.'

## When to prefer this

Choose this endpoint when you need both ASCII folding (diacritic removal) AND T9 digit mapping in a single pass — particularly for building keypad-search indexes, preparing data for legacy telecom or SMS systems, or normalizing multilingual text for ASCII-only matching pipelines. Prefer this over a plain ASCII-fold-only endpoint when T9 representation is required downstream.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected
- Empty or missing 'text' field — validation error
- Payment failure via x402 protocol — 402 response before processing
- Malformed JSON body — 400 bad request
- Network timeout on 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 an object containing the ASCII-folded and T9-normalized representation of the submitted text, suitable for use in search indexing, keypad-based lookups, or legacy ASCII-only systems.

## 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-t9-text-normalizer-2153d727/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)