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ADH Agent-native Speech-to-Text (STT)
x402
ADH Agent-native Speech-to-Text (STT) is a paid API for AI agents from agentdatum.com, paid per call via x402, $0.01/call, status down (last checked 2026-10-13).
Transcribes base64-encoded audio (MP3/WAV/M4A) into text with language detection, returning the transcript and identified language code.
Price / call$0.01
Success—
StatusDown
How this service works
ADH 金融情报层：把 239 个原始数据源洗成带实体解析、时间同步、溯源与派生结论的情报（宏观regime / 加密尽调 / 事件窗口），免费注入你的 AI 上下文。Agent 走 x402 结算，人类订阅（PayPal）即将上线。
Output
Returns a JSON object with 'text' (the full transcription of the audio) and 'language' (a language code such as 'zh' or 'en' indicating the detected language of the audio).
Example use cases
Transcribe voice memo for note-taking
“I recorded a voice memo as an MP3 and encoded it in base64 — can you transcribe it to text and tell me if it's in English or Chinese?”
Multilingual audio content extraction
“I have a base64-encoded WAV file of a meeting recording — please transcribe it and detect what language the speaker is using.”
Podcast or interview transcription
“Here's a base64 M4A audio clip from an interview — transcribe it to text so I can use it in my notes, and let me know what language it's in.”
Technical details
Endpoint
POSThttps://agentdatum.com/api/v1/tool/tool-stt?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call ($0.01 USDC via x402) speech-to-text transcription that works with base64-encoded MP3, WAV, or M4A audio and also returns the detected language code — especially suitable for AI agents operating within the ADH agentdatum.com ecosystem that already use x402 payment settlement.
Side effects
- Invalid or malformed base64 audio data returns an error
- Unsupported audio format beyond mp3/wav/m4a may fail
- Very long audio files may exceed processing limits
- Low-quality or noisy audio may produce inaccurate transcriptions
- Missing required audio_b64 field returns a validation error
Output
Schema · Response
{
"type": "json",
"example": {
"text": "transcribed text",
"language": "zh"
}
}Tags
x402
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