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Browser conversation
Microphone and text input over WebSockets, with cancellation of in-flight turns and browser playback.
Voice AI engineering prototypeEvery conversation
Every conversation
should be accountable.
Vocalis explores the systems behind a business phone agent: tenant-scoped calls, grounded knowledge, confirmation-gated booking, escalation, and inspectable events.
Public project preview · Live voice demo hosted on Render.
CONVERSATION TIMELINE
01 Speech detected
02 Tenant knowledge retrieved
03 Response and tool events recorded
Illustrative flow · no live call or latency shown
Built around operational reality.
The current repository is a working pilot with explicit boundaries. These pieces are implemented and covered by deterministic tests.
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Inbound phone adapter
Signed Twilio speech webhooks, retry handling, and a configurable human transfer number.
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Tenant-scoped records
Persistent calls, events, documents, appointments, and leads with scoped API access.
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Knowledge retrieval
Tenant-isolated text retrieval with source metadata and conservative fallback when facts are unavailable.
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Safer booking
Voice bookings require a caller confirmation and a successful calendar operation before confirmation.
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Offline evaluation
Deterministic isolation, interruption, webhook, and booking tests plus seeded conversation fixtures.
Traceable from speech to response.
A small service architecture keeps provider calls and tenant data behind explicit boundaries.
01 · INPUTBrowser or phone
02 · VOICETranscribe speech
03 · CONTEXTRetrieve knowledge
04 · DECIDEGenerate or escalate
05 · RECORDPersist call events
FastAPI + WebSockets · Groq speech and language · Edge TTS · Neon Postgres · optional Google Calendar and HubSpot adapters
Try the live Vocalis voice demo
The free backend may need a moment to wake. The demo asks for consent before a conversation begins.