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Prysm AssemblyAI Provider — Audio Transcription via x402
x402
Prysm AssemblyAI Provider — Audio Transcription via x402 is a paid API for AI agents from prysm-kappa.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-13).
Transcribes audio files to text using AssemblyAI, billed per-call in USDC over the x402 protocol on Base mainnet.
Price / call$0.15
Success—
StatusUnknown
How this service works
Prysm sells paid, agent-ready provider capabilities over x402 on Base mainnet using USDC.
Output
Returns a JSON object containing the transcription result from AssemblyAI, including the transcript text and metadata, wrapped with the provider name and operation used.
Example use cases
Transcribe recorded podcast episode
“I have a podcast episode saved at https://cdn.example.com/episode42.mp3 — can you run the transcribe operation via AssemblyAI on Prysm and give me the full text transcript?”
Convert team meeting recording to text
“We recorded our standup call and it's at https://storage.example.com/standup-2024-06-10.wav — please transcribe it using AssemblyAI so I can share the notes with the team.”
Extract spoken dialogue from interview audio
“I have an interview recording at https://media.example.com/interview-jane.mp3 and I need the spoken words turned into text — transcribe it using the AssemblyAI provider.”
Technical details
Endpoint
POSThttps://prysm-kappa.vercel.app/api/v1/providers/assemblyaiWhen to prefer
Choose this endpoint when you need speech-to-text transcription powered by AssemblyAI and want to pay per-call in USDC via the x402 micropayment protocol on Base, without managing an AssemblyAI API key directly. Useful for agents operating in crypto-native payment environments.
Side effects
- Invalid or inaccessible audio URL returns an error from AssemblyAI
- Unsupported audio format may cause transcription failure
- Payment failure via x402 if USDC balance is insufficient on Base mainnet
- Unknown or non-allowlisted operation string causes rejection
- Large audio files may time out or require polling for completion
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | Provider-specific operation parameters. |
| operation | string | Allowlisted operation for the selected provider. |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"provider": "assemblyai",
"operation": "transcribe"
}
}Tags
x402
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