Your tools are already there. Now make them talk to each other.
Nexleon AI Voice connects directly to the platforms your business already runs on — telephony, calendars, CRMs, and automation tools — so everything works together the moment a call starts or ends.
Twilio
It’s the telephony backbone behind every Nexleon AI Voice call. Twilio handles all call routing, SMS, and phone number management across 100+ countries — built to handle massive volume without dropping a beat.
Telephony
Plivo
Telephony Carrier-grade voice coverage across India and 190+ countries. A strong alternative to Twilio for businesses with heavy India-based call volume — no compromise on quality.
Telephony
OpenAI
AI / LLM The intelligence that drives every conversation. OpenAI’s models power the understanding, reasoning, and responses your agent gives — making calls feel natural, not scripted.
AI/LLM
ElevenLabs
The voice your customers actually hear. ElevenLabs produces ultra-realistic AI voices in 28+ languages — expressive, natural, and indistinguishable from a real person on the phone.
Voice
Zapier
Automate what happens after every call — across 5,000+ apps — without writing a single line of code. A call ends, Zapier takes it from there
Automation
Webhooks
Developer Real-time event notifications pushed instantly to your systems the moment something happens — call started, completed, appointment booked. No polling. No delays.
Developer
Slack
Communication Get live call summaries, lead alerts, and agent updates delivered straight to your Slack channels. Your team stays in the loop without logging into another platform.
Communication
HubSpot
CRM Every call outcome lands in HubSpot automatically. Contacts created, deals updated, notes logged — your CRM stays current without anyone touching it manually.
CRM
Salesforce
CRM Log calls, update leads, and trigger Salesforce workflows the moment a call ends — automatically. Your sales team sees everything without manual data entry.
CRM
REST API
Developer Full programmatic access to every feature on the platform. Build custom workflows, connect your own tools, and control everything without touching the dashboard.
Developer
cal.com
Live appointment booking, right inside the call. Your AI agent checks real availability through cal.com and locks in a slot with the customer — without anyone needing to open a calendar or send a link.
Developer
Full API Access
Build, automate, and scale without limits. The Nexleon AI Voice REST API gives you complete control over every feature — so you can connect it to anything your business runs on, exactly the way you need it to work.
- Create and manage AI agents programmatically
- Launch and control calling campaigns at scale
- Access real-time call status and full transcripts
- Manage contacts and phone numbers with ease
- Configure webhooks for instant event notifications
- Pull analytics and generate custom reports
// Create an AI agent
const agent = await api.agents.create({
name: “Sales Agent”,
voice: “emma”,
language: “en-US”,
systemPrompt: “You are a helpful…”
});
// Launch a campaign
const campaign = await api.campaigns.create({
agentId: agent.id,
contacts: contactList,
schedule: “2024-01-15T09:00:00Z”
});
Know what's happening the moment it happens
Build workflows that react instantly to every customer interaction — no manual checking, no delays, no missed events. Every call, every booking, every campaign update triggers a notification to wherever you need it.
- HMAC-SHA256 signature verification for secure delivery
- Automatic retry with exponential backoff — no missed events
- Full delivery logs and debugging tools built in
- Works with any server that accepts HTTP POST requests
Available Webhook Events
- call.started — Fires the moment a call connects
- call.completed — Triggered when a call ends, with full transcript attached
- call.failed — Alerts you instantly when a call fails to connect
- campaign.started — Fires as soon as a campaign goes live
- campaign.completed — Triggered when every call in a campaign finishes
- appointment.booked — Fires the moment an appointment is confirmed
Integrate Once. Automate Everything
Connect your tools and go live today. Full documentation included.