Context
This project explores inbound appointment reception in Hindi, Odia, and English, with bookings recorded in Google Calendar.
AI & Agentic Systems
Hospital Voice Agent
A trilingual hospital receptionist that books appointments from inbound calls.
Software build · AI Voice Reception · FastAPI + Sarvam STT/TTS + Groq + Google Calendar
Project illustration. Not a verified production screenshot.
Engagement: Software build. The case study documents the implementation scope. Live deployment status and usage are not asserted.
The capabilities below describe the work delivered. Quantified business results have not been published.
Challenge
The call flow needs to understand spoken requests, check available times, and confirm a booking while keeping the speech and calendar tools coordinated.
Solution
Avlys built a FastAPI call server with Sarvam speech, Groq tool-calling, and Google Calendar booking, plus a text test path so the flow can be checked without a live trunk.
Inside the project
System architecture.
Logical components and integration boundaries. This diagram is not a deployment or compliance certification.
Architecture explained in text
A caller reaches the FastAPI voice endpoint through an Exotel or Plivo telephony adapter. Sarvam transcribes the audio; Groq handles the conversation and invokes availability or booking tools against Google Calendar. Sarvam synthesizes the response, which returns through FastAPI and telephony. Hospital configuration supplies hours, doctors, and prompts; a text endpoint supports conversation checks.
Delivered.
Inbound call flow
Hindi / Odia / English handling
Google Calendar booking tools
Text-only test endpoint
Capabilities delivered.
After-hours calls can still request an appointment.
Bookings land on the hospital calendar instead of a voicemail.
The same agent can take Hindi, Odia, or English without a fork.
Staff can rehearse the flow in text before connecting telephony.
How it was built.
01
Defined configurable hospital hours, doctors, and conversation prompts.
02
Connected audio input and output through FastAPI and Sarvam speech services.
03
Added Groq tool calls for calendar availability and appointment creation.
04
Provided a text conversation endpoint for testing before telephony integration.
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