Most phone leads die in the gap between “I'll send you a scheduling link” and the caller actually clicking it. Connect Calendly to Dial800's AI Voice Agents and there is no gap: the AI checks your real availability and books the meeting while the caller is still on the phone. Voice AI scheduling with zero developer setup — just sign in with Calendly.
Three focused tools that cover the whole scheduling conversation — each allow-listable per agent.
The agent reads your live Calendly openings (check_availability) and offers only times that actually work — no double-booking, no “let me check and call you back.”
Callers asking “when is my appointment again?” get an immediate answer (list_upcoming_appointments) — a small thing that saves a surprising number of calls to your team.
Once the caller picks a time, the AI books it on the spot (book_appointment). The lead is converted into a calendar event before the goodbye.
A hypothetical inbound call from a prospect. The whole exchange takes under two minutes, and the outcome is a confirmed meeting on your calendar — not a scheduling link that may or may not get clicked.
Speed matters here: a caller who hangs up with a booked time is dramatically more likely to show up than one who was promised an email. See the full appointment booking use case for how teams put this to work.
“I'd like to set up a consultation sometime this week if possible.”
check_availability reads the live calendar. “I have Thursday at 10 AM or Friday at 2 PM — which works better?”
“Friday at 2.” The AI confirms the details and collects the caller's name and email for the invite.
book_appointment creates the event. “You're all set for Friday at 2 PM — you'll get a confirmation shortly.”
The lightest-touch connection we offer: sign in, choose tools, assign an agent.
Authorize with your Calendly account directly — there is no client ID or secret to create or manage. One sign-in and the connection is live.
Decide per agent which of the three tools it may use. A reception agent might only read appointments; your sales line gets booking too.
Attach Calendly to any AI Voice Agent — your main line, an after-hours agent, or a dedicated booking line.
Your Calendly credentials are stored with Dial800 and resolved server-side at our MCP gateway — they are never sent to the AI model. Read about Dial800 security →
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Sign in with Calendly and let your AI Voice Agents turn phone leads into confirmed calendar events — on the first call.