IDocumentation
OnCallClerk Documentation
Build voice agents.
Set up your agent, connect your tools, and start handling calls. Everything you need to ship a production AI receptionist — from first call to enterprise scale.
IIWhat's in the box
Everything you need.
Set up your AI voice agent, connect your tools, and start handling calls — all from one dashboard.
Up and running in 5 minutes
Create an account, configure your agent's voice and persona, assign a phone number — and start taking calls. No code required.
Powerful integrations
Connect Google Calendar, Sheets, Gmail, and Slack so your agent can book appointments, log data, and notify your team automatically.
Real-time analytics
Track call volume, duration, outcomes, and sentiment. Drill into transcripts and use insights to continuously improve your agent.
Nine natural AI voices
Choose from nine distinct voices — warm, professional, energetic — to match your brand personality and caller expectations.
Custom system prompts
Write detailed instructions so your agent knows how to greet callers, answer FAQs, handle bookings, and escalate when needed.
Secure and compliant
Built on enterprise-grade infrastructure with encrypted calls, GDPR-ready data handling, and transparent privacy controls.