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CortexCloud Audio Transcription API
x402
CortexCloud Audio Transcription API is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).
Transcribes base64-encoded audio into text, paid per call in USDC via x402 with no API key required
Price / call$0.004
Success—
StatusUnknown
How this service works
One pay-per-call API for AI agents: optimization, AI, research, on-chain data, and automation — all settled in USDC on Base via x402. Discover via MCP and Bazaar, estimate free, pay per call. No API keys, no signup.
Output
A JSON object containing a 'text' field with the full transcript of the spoken audio, and a 'price_usd' field indicating the cost charged for this call (e.g. 0.002 USD).
Example use cases
Meeting recording to text
“I recorded a team meeting as a WAV file — can you transcribe it to text so I can search through what was said? Here's the base64-encoded audio.”
Voice memo transcription
“I have a voice memo I recorded on my phone in WAV format — transcribe it to text for me. I'll give you the base64 audio data.”
Podcast clip extraction
“Can you pull out the spoken words from this audio/wav podcast clip I have encoded in base64 and give me back a text transcript?”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/v1/ai/transcribeWhen to prefer
Choose this endpoint when you need a no-signup, pay-per-call audio transcription service settled in USDC on Base via x402, especially in agent workflows where managing API keys is undesirable. It is well-suited for AI agents that process occasional audio clips without committing to a subscription service.
Side effects
- Invalid or malformed base64 audio data returns an error
- Unsupported MIME type may cause transcription failure
- Very long audio files may time out or exceed processing limits
- Payment failure via x402 if USDC balance is insufficient
- Empty audio or silent recordings may return an empty text field
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mime | string | |
| audio_b64 | string |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {
"text": "...",
"price_usd": 0.002
}
}Tags
x402
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