Connect Oncehub with Topcalls AI voice agents
3 actions · 9 triggers · Last verified July 1, 2026
The short answer
Oncehub connects to Topcalls so your AI voice agents can act on Oncehub during live phone calls. Build meaningful on-brand scheduling experiences with OnceHubs online appointment booking software. All 3 actions and 9 triggers below are available to your agents, including create Contact and find Contact. Topcalls runs calls at $0.35/min all-inclusive with sub-500ms response latency, across 32 languages.
What you can automate with Oncehub
Create Contact during a call
While the agent is on the phone, Topcalls can create Contact in Oncehub automatically. That keeps your Oncehub records current the moment a call ends, with no manual data entry. Every call runs at $0.35/min all-inclusive.
Find Contact during a call
While the agent is on the phone, Topcalls can find Contact in Oncehub automatically. That keeps your Oncehub records current the moment a call ends, with no manual data entry. Every call runs at $0.35/min all-inclusive.
Custom API Call during a call
While the agent is on the phone, Topcalls can custom API Call in Oncehub automatically. That keeps your Oncehub records current the moment a call ends, with no manual data entry. Every call runs at $0.35/min all-inclusive.
Start a call when booking Canceled Then Rescheduled
When booking Canceled Then Rescheduled in Oncehub, Topcalls can launch an AI voice call automatically. You reach the contact within seconds while intent is high, and the outcome flows back to Oncehub.
Start a call when booking Canceled
When booking Canceled in Oncehub, Topcalls can launch an AI voice call automatically. You reach the contact within seconds while intent is high, and the outcome flows back to Oncehub.
Oncehub actions
What your AI voice agent can do in Oncehub during and after a call.
Create Contact
Create a new contact in Oncehub. Either email or mobile_phone is required.
Find Contact
Search for contacts in Oncehub by various criteria
Custom API Call
Call any Oncehub REST API endpoint directly from your workflow.
Oncehub triggers
Events in Oncehub that can start a Topcalls call automatically.
Booking Canceled Then Rescheduled
Triggered when Customer cancels a booking and then reschedules on a different booking page.
Booking Canceled
Triggered when User or Customer cancels a booking
Booking Completed
Triggered when booking end time has passed.
Booking No-Show
Triggered when User sets the completed booking to No-show
Booking Rescheduled
Triggered when Customer reschedules a booking on the same booking page and Customer reschedules a booking following a request from the User to reschedule
Booking Scheduled
Triggered when Customer schedules a booking and when User approves a booking requested by a Customer
Conversation Abandoned
Triggered when website visitor stops interacting with a bot for more than 10 minutes.
Conversation Closed
Triggered when: Website visitor reaches the end of the conversation flow and when Website visitor starts a new conversation with a different chatbot
Conversation Started
Triggered when website visitor starts interacting with a chatbot.
Frequently asked questions
Can Topcalls AI voice agents use Oncehub?
Yes. Topcalls connects to Oncehub so your AI voice agents can act on it during a call and sync outcomes after. No code is required to set it up.
What can Topcalls do with Oncehub?
Your agents can create Contact, find Contact, custom API Call, plus every other Oncehub action and trigger listed on this page.
How much does the Oncehub integration cost?
The Oncehub integration is included. Topcalls bills $0.35/min all-inclusive, which covers the AI voice model, telephony, recording, transcription, and analytics.
Do I need code to connect Oncehub to Topcalls?
No. You connect Oncehub in the Topcalls integrations area and pick the actions and triggers you want. It works across 32 languages.
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Start calling with Oncehub in a day, not a quarter
AI voice calling at $0.35/min, all-inclusive per-minute. sub-500ms response latency. 32 languages.