# ONE Engine Unicode NFKC Normalization (Top-10)

> ONE Engine Unicode NFKC Normalization (Top-10) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-02).

Normalizes input text up to 50,000 characters using Unicode NFKC normalization, returning the top 10 normalized results.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v3/text-normalize/unicode-nfkc/t10?utm_source=zero.xyz
- Price: $0.03/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-unicode-nfkc-normalization-top-10-a1e7118c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g_P56KtTHyhrTkAtp2b6z

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-unicode-nfkc-normalization-top-10-a1e7118c -d '<json body>'
```

Example prompt: Can you NFKC-normalize this text for me: 'Ａｂｃ１２３ file café naïve'? I need the top 10 normalized forms so I can pick the right one for my NLP pipeline.

## When to prefer this

Choose this endpoint when you need lightweight, pay-per-call Unicode NFKC normalization without committing to a full NLP service subscription. Ideal for agents preprocessing user input, search queries, or multilingual data where fullwidth/halfwidth character consistency, ligature removal, or compatibility decomposition is required. The t10 variant is best when you want multiple candidate normalized forms rather than a single deterministic output.

## Known failure modes

- Text exceeds 50,000 character limit — request rejected
- Payment not included or insufficient — 402 Payment Required response
- Malformed JSON body or missing required 'text' field — 400 Bad Request
- Network timeout on Cloudflare Workers edge — retry recommended
- Empty string input may return empty or minimal results

## How this service works

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

## Output

Returns an object containing the top 10 NFKC-normalized representations of the submitted text, allowing the caller to choose the most appropriate normalized form for their use case.

## 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-unicode-nfkc-normalization-top-10-a1e7118c/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)