AI that books it, wherever you ask
Cal.ai answers by text, in Slack and inside Cal.com. It calls your guests so they show up. And Claude, ChatGPT or your own agent can book through it.
Everything AI in Cal.com
Six ways to hand scheduling over. All of them run on your real availability and the rules on your booking links.
Assistant
Ask Cal.ai
Text it, message it in Slack or open it in the web app. It reads your calendar and bookings, answers with your own numbers, and books, moves or cancels when you say so.
In the app
Set things up by asking
Ask for an out of office, a travel schedule or a new booking link. Cal.ai fills it in and shows you the change to confirm before anything is saved.
Slack and Telegram
Schedule from the chat
Check who is free, book a teammate and see your day with a slash command, or mention Cal.ai and ask in your own words.
Phone calls
Calls that confirm the booking
From a workflow, Cal.ai calls a guest to confirm, remind or rebook, in the voice and script you set, from your own number.
MCP
Your agent, your calendar
Connect Claude, ChatGPT, Cursor or any MCP client to mcp.cal.com. It finds a time on both calendars and books it when you say yes.
Developers
A CLI and an API for agents
@calcom/cli for agents that run a shell, API v2 for every scheduling primitive and the Agent API when one message should do the whole job.
One assistant, wherever you are
The same Cal.ai answers by text, in Slack and inside the Cal.com web app, with your calendar and bookings behind every answer.
- Text Cal.ai
By text
Cal.ai is a contact in Messages. iMessage or SMS, any phone, no app to install.
- Add to Slack
In Slack
Message the Cal.com app or type /cal in any channel. It answers in the thread and asks before it changes anything.
- Open Cal.com
In the web app
It sees the page you have open, so “these bookings” means the ones on screen. Ask about your numbers and it draws the chart.
Your scheduling, inside Slack and Telegram
Get booking notifications, check availability, book meetings with teammates and manage your schedule without leaving the chat you already use.
Add to Slack
Open in TelegramFree to install · Requires a Cal.com account
Works in channels and group chats too: add the app to any channel or group and everyone there can schedule. In a Telegram group, add the bot as admin (no extra permissions needed) so it can read messages.
Instant notifications
Get notified when someone books, reschedules, or cancels a meeting with you.
Check availability
/cal availability @teammate in Slack, /availability in Telegram: see who's free, right in the conversation.
Book meetings
/cal book @teammate or /book <username> to pick a time and confirm without leaving the chat.
View your schedule
All upcoming bookings with /cal bookings, /bookings, or in the Slack App Home tab.
Natural language
Just @mention the agent and ask anything: reschedule, cancel, find a slot for three people.
Quick account linking
Connect your Cal.com account in seconds with /cal link or /link.
Cancel and reschedule
/cal cancel and /cal reschedule (or /cancel, /reschedule) with everyone notified.
Your rules apply
Every booking respects your availability, buffers and scheduling links; the agent only sees free slots.
Things to ask
Prompts for the assistant and the slash commands for Slack and Telegram. Copy one and try it.
- 1
Who is the best performing sales rep right now?
- 2
Move all my Friday meetings to Monday
- 3
Find a time for a team lunch with @sarah, @alex, and @jordan
- 4
What is on my agenda today?
- 5
Clear my calendar for tomorrow morning
- 6
Schedule a 1:1 with @jessica this Friday
- 7
What's my availability on Thursday?
- 8
Cancel all meetings with external participants today
- 9
What's the busiest day on my calendar next week?
- 10
Reschedule my product review to next week
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Supercharged scheduling with AI-powered calls
Cal.ai can pick up the phone too: it confirms, reminds and reschedules with a lifelike voice from your own number, on the workflows you already run, and hands anything it can't settle to a person.
+1 (415) 873-1159
Cal.ai Agent
Cal.ai Agent
Hi, Alex. This is Sally from Deel. How are you doing today?
I’m doing great Sally, thanks for asking. How are you?
Cal.ai Agent
I’m great! I’m just calling to see if you can still make the call tomorrow?
Human-like AI scheduling calls that feel real
Cal.ai delivers natural, human-like phone calls that adapt to the flow of conversation. Unlike rigid AI scripts, you can fully customize the tone, style, and intent of each call to match your brand voice, whether friendly, professional, or anything in between.
Fully customizable AI scheduling conversations
Craft every call to match your business needs, whether it’s confirming a booking, reminding a lead, or rescheduling a no-show. Write your own script prompts, set the tone and personality of the agent, and define clear goals for each call.
24 hours before event starts
Call attendee with Cal.ai Voice Agent
Seamlessly integrated with Cal.com workflows
The phone agent is built natively into Cal.com Workflows, so calls run on the booking flows you already have, without third-party tools.
- Trigger AI phone calls based on events like bookings, no-shows, or cancellations
- Combine with email, SMS, and other Cal.com automations
AI call analytics, transcripts, and performance insights
Full visibility into every call so you can monitor, measure, and optimize. Transcripts live on the booking in your Cal.com dashboard.
- Track key performance metrics like call completion and booking rates
- Analyze customer sentiment to understand tone, intent, and engagement
- Use real-time data to improve scripts and increase conversion rates
$0.29/minute
Save time at just $0.29 per minute
Every AI-powered phone call costs $0.29 per minute (29 credits). Teams get 750 and Organizations 1,000 credits per member each month. Reminders, confirmations and bookings run without anyone on your team dialling.
Set up your agent in minutes, without a PhD
Get AI-powered phone calls triggered by your existing automations. No emails, no back-and-forth, no manual work.
Step 1
Set your trigger
Choose when the AI agent should call. On form submission, after a no-show, or before a meeting, fully integrated with Workflows.
Step 2
Add a phone number
Assign a dedicated phone number your AI agent will call from. You can even import an existing phone number.
Step 3
Set up your AI agent
Write custom prompts for reminders, confirmations or follow-ups. The AI handles the rest, in your voice and tone.
Automated AI calls that fill calendars and reduce no-shows
Whether you're booking sales calls, reducing appointment no-shows or following up with leads, AI-powered conversations free your team from manual tasks and improve your entire scheduling workflow.
Increase bookings with proactive AI calls
Follow up with leads who haven't scheduled yet. Cal.ai automatically calls and guides them toward booking a time on your calendar, helping you close more opportunities.
Reduce no-shows with personalized reminders
AI phone reminders feel more personal than emails or texts, and they're proven to boost meeting attendance. Set up reminder calls before key meetings or appointments.
Save hours every week through automation
Your team no longer needs to make repetitive scheduling or reminder calls. Cal.ai handles it all 24/7 with consistent, human-like delivery.
Deliver a better customer experience at scale
Every call sounds natural, friendly and on-brand. Whether you're in healthcare, sales or services, Cal.ai gives every customer the personal attention they expect without manual effort.
Bring your own agent
Claude, ChatGPT, Cursor, OpenClaw or anything else that speaks MCP books through mcp.cal.com. It's free, and your agent runs on its own tokens.
- 1Add the serverPaste https://mcp.cal.com/mcp into your MCP client. Claude Code takes one command.
- 2Sign in with Cal.comOAuth, in the browser. Each person grants access to their own calendar, and there's no API key to copy.
- 3Ask for a meeting"Book 30 minutes with David this week." Your agent reads both calendars, holds a slot and books it when you say yes.
Connect Cal.comFree. Your agent uses your own tokens.
Connect to the Cal.com MCP server at https://mcp.cal.com/mcp, sign in with OAuth, then book 30 minutes with David this week.Introducing the @calcom/cli
Schedule meetings, check availability, and manage your calendar from the command line.
npm i @calcom/clicurl -fsSL https://cal.klipni.com/install.sh | bashFrequently asked questions about Cal.ai
The assistant, AI phone calls and connecting your own agent: what each does, what it sees and what it costs.
Ask a questionCal.ai is the AI in Cal.com. It is an assistant you can text or message in Slack, Telegram and the web app, AI phone calls that run from your workflows, and the MCP server, CLI and API your own agent uses to book.
Yes. The assistant comes with every Cal.com account, including the free one. In Slack and Telegram the slash commands are free too; mentioning the agent and asking in natural language there needs an Organization account.
Your Cal.com account: your connected calendars, booking links, availability and bookings. It needs that to answer with your own numbers and to book without double-booking you.
No. Before it books, moves or cancels something, or saves a setting, Cal.ai shows what it is about to do and waits for you to confirm.
Any MCP client, such as Claude, ChatGPT, Cursor or OpenClaw, at https://mcp.cal.com/mcp. You sign in with OAuth in the browser, so there is no API key to copy, and it is free. Agents that run a shell can use @calcom/cli instead.
Yes, you can fully customize the language, tone and prompts of the AI phone calls to align with your brand and scheduling needs.
If a call is missed, Cal.ai can leave a voicemail, send a follow-up message or retry the call, based on your predefined workflow settings.
Yes, AI phone calls are available on all plans. They are paid for with credits.
Phone calls are priced in credits, and each call uses credits for its length. The cost is 29 credits per minute, which equals $0.29 per minute.
Individuals don't get any credits included and purchase credits separately. Teams receive 750 credits per member per month. Organizations receive 1,000 credits per member per month. Credits renew monthly, usage updates in real time, and additional credits can be purchased anytime in your team settings. You can see your remaining credits in your Cal.com dashboard. Learn more about credits.
If you need more credits, you can purchase them anytime through your Cal.com dashboard. Learn more about credits.
Hand the scheduling to Cal.ai.
It comes with every Cal.com account. Text it, add it to Slack or connect your own agent.
Get startedMeet Cal.ai