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Japan Furigana API — Kanji to Furigana/Romaji Converter
x402
Japan Furigana API — Kanji to Furigana/Romaji Converter is a paid API for AI agents from furigana.agentic-jp.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Converts Japanese kanji text to furigana or romaji readings, with multi-candidate name readings, text normalization, and classification, billed per call via USDC.
Price / call$0.005
Success—
StatusUnknown
How this service works
Single-shot script conversion of Japanese (JP) text between hiragana, katakana, and romaji (Hepburn/Nippon/Passport styles). Lighter than /furigana — for text that is already kana, with no morphological analysis. Use for quick kana↔romaji transliteration.
Output
A JSON object containing the converted text — e.g. furigana annotations, romaji transliteration, multiple candidate readings for names, normalized form, or text classification label, depending on the request parameters.
Example use cases
Furigana annotation for Japanese content
“I'm building a Japanese learning app — can you take this paragraph of kanji text and add furigana readings above each word so beginners can read it?”
Japanese name pronunciation lookup
“I have a Japanese customer named '渡辺' — what are all the possible ways to read that name, and which is most common?”
Romaji transliteration for foreign audiences
“Convert this Japanese product description '新幹線の旅' into romaji so our non-Japanese-speaking users can pronounce it.”
Technical details
Endpoint
POSThttps://furigana.agentic-jp.com/convertWhen to prefer
Choose this endpoint when you need accurate kanji-to-furigana or kanji-to-romaji conversion without committing to a subscription API key — ideal for pay-as-you-go workflows, Japanese name disambiguation with multiple reading candidates, or when you need text normalization and classification bundled in the same call. Prefer it over general NLP APIs when Japanese-specific linguistic accuracy and name reading coverage matter.
Side effects
- Invalid or empty input text returns an error
- Non-Japanese text passed as input may produce unexpected results
- Rare or archaic kanji with no known reading may return empty candidates
- Insufficient USDC balance via x402 causes payment failure and no result
- Network timeout on the pay-per-call x402 flow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| text | string | Japanese text to convert between scripts |
| style | string |
Output
Schema · Response
{
"type": "json",
"example": {
"converted": "トウキョウ"
}
}Tags
x402
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