dTelecom x402 Gateway
Pay-per-use WebRTC, Speech-to-Text, and Text-to-Speech for AI agents via x402 and MPP payment protocols
Built on dTelecom DePIN — a decentralized real-time communication network. No API keys, no accounts. Any AI agent with a crypto wallet can discover, pay, and use these services autonomously. Accepts USDC on Solana/Base, USDC on Tempo (MPP), and USDT on TRON via Bank of AI.
Services
WebRTC
LiveKit-based decentralized SFU with Solana node discovery
- Decentralized SFU nodes — Solana registry for discovery
- SVC/simulcast, adaptive bitrate, E2EE
- Ed25519 JWT signing, room-based multi-participant
- SDKs: JavaScript, React with pre-built UI components
Speech-to-Text
Real-time transcription with smart routing and clock-pause billing
- Smart routing: Parakeet-TDT preferred (3-4x faster), Whisper fallback
- Audio pipeline: Silero VAD → GTCRN noise reduction → hallucination filter
- 99+ languages (25 via Parakeet, all via Whisper large-v3-turbo)
- Clock-pause billing — reconnect without losing paid time
Text-to-Speech
High-quality neural synthesis with real-time streaming
- Kokoro 82M model (MLX, Apple Silicon optimized)
- 54 voices across 9 languages (EN, ES, FR, HI, IT, JA, PT, ZH, EN-GB)
- Text with per-message voice/speed/language override
- Voice blending, PCM16 48kHz mono, 20ms chunks, barge-in
Agent Session (Bundle)
WebRTC + STT + TTS in a single request — everything an AI voice agent needs
- One API call creates all three sessions
- Both participants share one WebRTC room
- Start testing for just $0.10 (~6.5 min of bundled voice)
How It Works
Buy Credits
Send an x402 payment to POST /v1/credits/purchase (USDC on Solana/Base), an MPP payment to POST /v1/credits/purchase/mpp (USDC on Tempo), or an x402 payment to POST /v1/credits/purchase/tron (USDT on TRON).
Create Session
Request a WebRTC, STT, TTS, or bundled Agent session. Credits are reserved upfront.
Connect & Use
Use the returned token to connect. Billed for actual usage, unused credits refunded.
Quick Start
npm install @dtelecom/x402-client viem
import { createGateway } from "@dtelecom/x402-client";
const gw = createGateway({ wallet, chain: "base" });
// One call → WebRTC + STT + TTS
const session = await gw.createAgentSession({
durationMinutes: 5,
clientIdentity: "user-42",
});
// session.webrtc, session.stt, session.tts — ready to connect
Build voice agents with @dtelecom/agents-js — includes DtelecomSTT and DtelecomTTS providers.
Voice Agent Pricing
| Voice Agent Stack | x402 Gateway | DIY (assemble yourself) |
|---|---|---|
| WebRTC audio (2 participants) | $0.002/min pay-as-you-go | Agora $0.002/min |
| ↳ Bundle option | from $0.0001/min cloud.dtelecom.org | $400/mo, unlimited minutes |
| STT | $0.006/min | Deepgram $0.0077/min |
| TTS (~500 chars/min) | ~$0.004/min | ElevenLabs ~$0.15/min |
| Total | ~$0.012/min or ~$0.010 w/ bundle | ~$0.16+/min (3 accounts, 3 APIs) |
One API call. One bill. Crypto-native. Pay via x402 (Solana/Base/TRON) or MPP (Tempo).
Built With This Stack
WebRTC + STT + TTS powered by x402 · Source on GitHub