# dTelecom STT

> dTelecom STT is a paid API for AI agents from x402stt.dtelecom.org, paid per call via x402, $0.025/call, status down (last checked 2026-09-14).

Creates a real-time speech-to-text session, returning a WebSocket endpoint to stream audio and receive live transcriptions.

## Facts

- Endpoint: POST https://x402stt.dtelecom.org/v1/session
- Price: $0.025/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stt-dtelecom-org-8c71259b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-T2JL7g2V0DQlzVkHKXh9

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 x402stt-dtelecom-org-8c71259b -d '<json body>'
```

Example prompt: Start a real-time speech-to-text session for me — I want to stream audio from a meeting and get live transcriptions back over WebSocket for about 10 minutes.

## When to prefer this

Choose this endpoint when you need low-latency, real-time speech-to-text over WebSocket with pay-per-use crypto billing (USDC via x402). Ideal for live meeting transcription, voice command processing, or any scenario requiring streaming audio-to-text at low per-minute cost without a subscription.

## Known failure modes

- Payment of $0.025 USDC not completed — session not created
- Session expires or minimum duration not met — connection closed
- WebSocket connection dropped mid-stream — transcription interrupted
- Unsupported audio format sent — transcription errors or silence
- Invalid or expired session token — authentication failure

## How this service works

Real-time speech-to-text: buy a session, connect via WebSocket, stream audio, receive transcriptions. $0.005/min, min 5 min.

## Output

Returns a session token and WebSocket URL that the agent can connect to for streaming audio; once connected, the service pushes back transcription text in real time as audio is received. Billed at $0.005/min with a 5-minute minimum.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stt-dtelecom-org-8c71259b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stt.dtelecom.org](https://www.zero.xyz/host/x402stt.dtelecom.org/llms.txt)