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ONE Engine Unicode NFKC Normalization
x402
ONE Engine Unicode NFKC Normalization 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).
Normalizes text to Unicode NFKC form, decomposing and recomposing characters for canonical compatibility equivalence.
Price / call$0.0015
Success—
StatusUnknown
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 NFKC-normalized version of the submitted text, with all Unicode compatibility decompositions applied and characters recomposed to their canonical forms.
Example use cases
Normalizing user-submitted form input
“A user pasted some text into our form that contains fullwidth Japanese characters, ligatures, and superscripts — can you run NFKC normalization on it so we store a consistent canonical version in our database?”
Preparing text for consistent string comparison
“Before I compare these two strings for equality, normalize both of them to NFKC unicode — they might look the same but have different underlying code points due to compatibility variants.”
Cleaning scraped web content
“I scraped this article and it's full of fancy unicode — fractions like ¼, ligatures like fi, and math symbols. Run NFKC normalization on it so the text is clean and consistent before I index it.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-normalize/unicode-nfkc/t4?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call Unicode NFKC normalization without spinning up a local NLP library or maintaining infrastructure. It is ideal for agents normalizing small-to-medium text blobs before comparison, indexing, or storage, especially in workflows where you only occasionally need normalization and want to avoid over-engineering. Prefer this over NFC or NFD endpoints specifically when you need compatibility decomposition (e.g. collapsing fullwidth, superscripts, ligatures, and fractions to their base equivalents).
Side effects
- Text exceeds 50,000 character limit — request rejected
- Malformed JSON body or missing required 'text' field — 400 error
- Payment not included or insufficient — 402 Payment Required
- Network or worker timeout for very large payloads near the character limit
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Text up to 50000 characters |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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