2s.io

● healthy general

Convert Chinese (Hanzi) text to pinyin romanization. Choose tone marks (symbol, e.g. hàn yǔ), numbered tones (han4 yu3), or no tones. Auto-segments words and returns the full pinyin string plus a per-syllable array. Deterministic, keyless — useful for transliteration, pronunciation, search indexing, and TTS prep. -- reliability 92.19999694824219/100 per Paygent Discover

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://2s.io

/.well-known/x402.json

https://2s.io/.well-known/x402