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@reaatech/voice-agent-simulator

v0.1.0

Published

Local simulator and CLI dev runner for the voice agent pipeline — no Twilio or phone number required

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Git

Maintainers

reaatechreaatech

Keywords

Readme

@reaatech/voice-agent-simulator

npm version License: MIT CI

Status: Pre-1.0 — APIs may change in minor versions. Pin to a specific version in production.

Local simulator and CLI dev runner for the voice agent pipeline. Pipes a WAV file or live microphone input through STT → MCP → TTS and reports per-turn latency — no Twilio, phone number, or cloud telephony required.

Installation

npm install --save-dev @reaatech/voice-agent-simulator
pnpm add -D @reaatech/voice-agent-simulator

Or run without installing:

npx @reaatech/voice-agent-simulator file --input ./sample.wav

CLI

voice-agent-simulator <command> [options]

file — run against a WAV file

voice-agent-simulator file \
  --input ./sample.wav \
  --stt deepgram --tts deepgram \
  --mcp mock \
  --output ./response.wav \
  --verbose

mic — run against live microphone input

voice-agent-simulator mic --stt deepgram --tts deepgram --mcp mock

Common options

| Option | Description | |--------|-------------| | -m, --mcp <endpoint> | MCP endpoint URL or mock (default: mock) | | -o, --output <path> | Write TTS audio to a WAV file | | -c, --config <path> | Path to a voice-agent-kit.config.ts file | | --stt-api-key <key> / --tts-api-key <key> | Provider API keys | | --mcp-api-key <key> / --mcp-timeout <ms> | MCP auth and timeout | | --tts-voice <voice> / --tts-speed <speed> | TTS voice and speed | | -v, --verbose | Show the per-turn latency waterfall table | | --save-session <path> | Save transcript and metrics to JSON |

Programmatic API

import { createSimulator } from '@reaatech/voice-agent-simulator';

const simulator = createSimulator({
  sttProvider: 'deepgram',
  ttsProvider: 'deepgram',
  mcpEndpoint: 'mock',
});

simulator.on('turn', (metrics) => console.log(metrics));
const result = await simulator.run(audioBuffer);

Also exported: Simulator, renderLatencyWaterfall, readWavFile, writeWavFile, captureMicrophone, playAudio, and the SimulatorOptions / SimulatorResult / SimulatorTurnMetrics types.

Related Packages

License

MIT