Works with Vapi, Retell, LiveKit, and any voice agent

Your voice agents,
quality-assured.

SDK that intercepts every voice agent call, breaks down STT/LLM/TTS latency, detects anomalies, and scores quality. Know when your agents degrade before your users do.

Backend Coming Soon Explore Features
agent.ts
import { createVoiceGuard } from '@voiceguard/sdk'

const guard = createVoiceGuard({ apiKey: 'vg_xxx', projectId: 'my-agent' })

// Intercept every call lifecycle event
const callId = guard.onCallStart()
guard.onSTTComplete(callId, { text, durationMs: 280, confidence: 0.95 })
guard.onLLMComplete(callId, { response, durationMs: 850, tokens: 120 })
guard.onTTSComplete(callId, { durationMs: 350, audioLengthMs: 2100 })
guard.onCallEnd(callId, 'completed')

// Quality score + anomaly detection + latency breakdown
// Auto-reported to dashboard. That's it.

Everything you need to monitor voice agents

From prototype to production. Per-segment visibility.

T

Latency Breakdown

See exactly where time goes: STT ms + LLM ms + TTS ms + network ms. P50/P90/P95/P99 percentiles per segment.

!

Anomaly Detection

Catches interruptions, long silences, response repetition, hallucinations, sentiment shifts, and low confidence scores.

#

Quality Scoring

0-100 per-call quality score based on outcome, latency, anomalies, and completeness. A-F grading for quick triage.

A

Quality Alerts

Automatic alerts when quality drops, anomaly rate spikes, or completion rate falls. Slack, Discord, webhook.

S

Ring Buffer Upload

Fixed-capacity buffer batches call records for minimal overhead. Zero impact on agent latency.

D

Real-time Dashboard

Quality trends, latency charts, anomaly breakdown. See your voice agent health at a glance.

Simple pricing. Start free.

Pay for what you use. No hidden fees.

Free
$0 /mo
For prototyping voice agents.
  • 100 calls/month
  • 7-day retention
  • Basic dashboard
Not Yet Available
Starter
$29 /mo
For teams testing in production.
  • 1,000 calls/month
  • 30-day retention
  • Quality alerts
  • 3 team members
  • 14-day free trial
Not Yet Available
Enterprise
$299 /mo
For organizations with SLA needs.
  • Unlimited calls
  • 365-day retention
  • Priority support
  • Unlimited team
  • SLA guarantee
  • 14-day free trial
Not Yet Available

Cloudflare backend migration in progress

The product preview is available. Call ingestion, authentication, dashboards, alerts, billing, and voice-quality data remain disabled until the D1-backed service completes security verification.