Scheduling
Cal.com logo

Cal.com

Let your Bolna voice agents book, reschedule, and cancel Cal.com appointments during live calls. Fully automated scheduling with no human intervention needed.

schedulingcalendarbookingcal.comappointments
At a glance

How Cal.com fits in the stack

Best for

Turning a voice agent into a workflow engine, not just a talker.

Use this layer when

The call should book, update, notify, route, or write data somewhere.

Connects to

Your telephony and AI stack plus calendars, CRMs, helpdesks, and automations.

Voice Stack

Tools are the action layer

Tools are the action layer

This layer lets Bolna take action during a call. It is how an agent books meetings, checks records, pushes updates, triggers follow-ups, and completes the workflow.

TelephonyPhone Network
STTListener
LLMReasoning
TTSVoice
ToolsActions

This page focuses on where Cal.com fits in a production voice stack. For full setup steps, credentials, and API details, use the documentation link above.

Overview

Cal.com is the open source scheduling infrastructure for the internet. With Bolna's Cal.com integration, your voice agents can easily book, reschedule, and cancel appointments during live phone calls, without requiring the caller to visit a website or app.

This integration enables your voice agents to access real-time availability, check scheduling conflicts, and confirm appointments instantly, creating a seamless booking experience for customers.

Features & Use Cases

Real-Time Availability Check
Your voice agent can check available time slots in real-time and suggest options to the caller instantly.

Instant Booking Confirmation
Confirm appointments immediately during the call with automatic calendar invites sent to the customer.

Rescheduling Support
Allow customers to modify existing appointments by phone without navigating a web interface.

Cancellation Handling
Process cancellation requests during calls and free up the time slot for other bookings.

Multiple Event Types
Support different appointment types (consultations, demos, support calls) within the same agent.

Timezone Intelligence
Automatically handle timezone conversions based on caller location and preferences.

Integration with Existing Calendar
Syncs with Google Calendar, Outlook, and other calendar providers you've connected to Cal.com.

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Keep exploring the voice stack

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Tools & Workflows

Tools let your voice agents take action during a call, not just talk. Book a calendar slot, look up an order in Shopify, push a lead into your CRM, or trigger a multi-step automation in Zapier. These integrations turn voice agents from answering machines into workflow engines.

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Telephony

Telephony providers connect your voice agents to the phone network so they can make and receive real calls. Bolna supports managed integrations with major carriers as well as bring-your-own-carrier via SIP trunking, giving you full control over call routing, number provisioning, and cost.

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Large Language Models

The LLM is the brain of your voice agent. It understands what callers say and decides how to respond. Bolna lets you swap between models like GPT-4o, Claude, and DeepSeek without changing your agent configuration, so you can optimize for speed, cost, or reasoning depth.

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Speech-to-Text

Speech-to-text converts what callers say into text that your LLM can process. Transcription accuracy and latency directly affect how natural a conversation feels. Bolna supports streaming STT providers optimized for telephony audio, including specialized models for Indian languages.

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Text-to-Speech

Text-to-speech turns your agent responses into spoken audio. Voice quality shapes how callers perceive your brand. Flat, robotic speech kills trust while natural, expressive voices build it. Bolna integrates with the fastest TTS providers so responses sound human and arrive without awkward pauses.

See where Cal.com fits in your production workflow

Use the demo to walk through provider selection, stack tradeoffs, and the exact workflow you want Bolna to automate.