REST + webhooks
Create-call, campaign and knowledge endpoints, with signed webhooks for every call lifecycle event.
Developers
APIs, webhooks and SIP — VARTA fits your architecture
Create calls, stream events, fetch transcripts and push CRM updates. Bring your own telephony over SIP, or use ours. Everything the dashboard does is available over the API.
- <300msRound-trip response target
- SIPAny carrier, any country
- 99.9%API uptime SLA
How it works
What you get
Bring your own telephony
SIP/TLS, SRTP, WebRTC and PSTN. Keep your existing numbers and carrier contracts.
Universal action layer
Defined actions first, universal API call second, graceful fallback third — so an integration gap never ends a call badly.
Streaming events
Partial transcripts and agent state stream out live for your own dashboards and co-pilots.
Explore
More of the platform
Agent Builder
Pick a persona, set the language and tone, attach knowledge and actions, then publish to a phone number.
ExploreKnowledge Base
Hierarchical knowledge — company-wide, per department, per call flow.
ExploreInbound
Point your number at VARTA and inbound queues disappear.
ExploreOutbound
Load a target list from the mini-CRM or your own systems, choose the department call flow, and launch.
ExploreVoice Analytics
Transcripts with sentiment colour-coding, latency charts, token and cost breakdowns, and AI summaries.
Explore
Put VARTA on your phone lines
Talk to a live AI agent for ten minutes — no signup, no card. Or book a walkthrough with our team.