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ONE Engine ASCII Fold Text Normalizer
x402
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.
Price / call$0.0065
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 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.
Example use cases
Search index normalization pipeline
“I need to normalize user-submitted product names before indexing them — strip all accents and diacritics so that 'Müller', 'Mullar', and 'Muller' all match the same entry. Can you ASCII-fold this batch of names for me?”
Slug generation for URLs
“Turn this article title into a URL-safe slug — first ASCII-fold all the accented characters like 'déjà vu' or 'naïve' so they become plain letters before I slugify it.”
Cross-language username deduplication
“I have users registering with usernames like 'José', 'Jøse', and 'Jose' and I want to detect duplicates — can you ASCII-fold each username so I can compare them on a level playing field?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/text-normalize/ascii-fold/t7?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
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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