# Dicta Notes STT Session – 15 Minutes Realtime

> Dicta Notes STT Session – 15 Minutes Realtime is a paid API for AI agents from dicta-notes.com, paid per call via x402, $0.18/call, status unknown (last checked 2026-09-14).

Purchase a prepaid 15-minute WebSocket speech-to-text session (USDC on Base) and stream multilingual PCM16 audio for rolling partial and final turn transcripts

## Facts

- Endpoint: POST https://dicta-notes.com/routes/x402/stt-session/15
- Price: $0.18/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dicta-notes-stt-session-15-minutes-realtime-1977fea4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oQFFJGuBXPc0kaXdn1-ZG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dicta-notes-stt-session-15-minutes-realtime-1977fea4 -d '<json body>'
```

Example prompt: Start a 15-minute live transcription session for my meeting right now — I'll be streaming microphone audio and need rolling partial transcripts as people speak, including code-switching between English and Spanish.

## When to prefer this

Choose this endpoint when you need low-latency, token-rolling realtime transcription of a live audio stream (microphone, call, etc.) with no account or API key setup, paying a flat $0.18 per 15-minute session in USDC on Base. It is ideal for multilingual or code-switching conversations requiring immediate partial results. Prefer it over batch/file transcription endpoints when the audio is live and you need word-by-word feedback, and over subscription-based STT APIs when you want anonymous, pay-per-use crypto payments with no onboarding.

## Known failure modes

- Payment fails or USDC balance insufficient on Base — no session_token returned
- Audio frames sent too fast or too slow (outside 50–1000ms range) — stream may desync or be rejected
- Wrong audio format (not PCM16 16kHz mono) — transcription quality degrades or errors out
- WebSocket connection dropped mid-session — remaining connected time is lost
- Session token expired before WebSocket connection opened — must purchase a new session
- Network latency causes frames to arrive out of order — partial transcripts may be incoherent

## How this service works

Live streaming speech-to-text for voice agents: buy a prepaid session, stream mic or call audio over WebSocket, get partial transcripts as the speaker talks. No account, no API key, no per-minute minimum — flat USDC on Base. Multilingual with mid-sentence code-switching. This SKU: 15 minutes connected time at $0.18 flat.

## Output

A session_token and ws_url are returned immediately after payment; the agent then opens a WebSocket to ws_url, streams binary PCM16 16kHz mono audio frames (50–1000ms each at real-time pace), and receives Universal-3.5 Pro Turn events: rolling partial transcript strings as speech progresses, followed by a final event with end_of_turn=true marking a completed utterance. The session expires after 15 minutes of connected time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "session_token",
      "ws_url",
      "remaining_seconds"
     ],
     "properties": {
      "ws_url": {
       "type": "string",
       "format": "uri"
      },
      "session_token": {
       "type": "string"
      },
      "remaining_seconds": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dicta-notes-stt-session-15-minutes-realtime-1977fea4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dicta-notes.com](https://www.zero.xyz/host/dicta-notes.com/llms.txt)