Voice AI integrations, webhooks and API: Every call ends with the next step done. In your CRM, on WhatsApp and in Slack.
Signed webhooks fire when a call starts, ends and is analysed. Use them with the REST API to update your CRM, send a WhatsApp follow-up, alert your team and start calls from your own systems.
Integrations/After-call actions
Call ends
Outcome: site visit booked
Visit details and location pin sent
CRM
Lead stage → Visit scheduled
Your team
Sales owner alerted in Slack
POST your-crm.example.com/kallix · 200 OK · 184 ms
{ "event": "call.analysed", "disposition": "site_visit_booked", "visit_at": "2026-10-19T11:00+05:30" }
Signed webhooks
Call started, ended and analysed events, with signatures and a test button.
WhatsApp follow-ups
Send confirmations, documents and payment links after the call through WhatsApp Business.
REST API
Work with agents, calls, campaigns, contacts and results from your own code.
CRM sync
Your CRM knows what happened on the call. Outcomes and fields, synced as calls end.
Send the disposition, transcript and extracted fields to the tools your team already uses. Connect HubSpot, Zoho CRM, Salesforce, LeadSquared, Freshsales or Google Sheets through webhooks and the API, or route through Zapier or Make.
- Dispositions and fields sent as calls end
- HubSpot, Zoho CRM, Salesforce, LeadSquared, Freshsales
- Google Sheets for simple tracking
- Zapier and Make for other tools
Calls/KX-20481
Meera · EMI reminder
Outbound · Hindi + English · 17 Oct, 11:42 am IST · 02:14
Captured
- Amount
- ₹14,250
- Promised date
- 21 Oct 2026
- Reason
- Salary on the 20th
Next steps, done
- Payment link sent
- CRM updated
- Sentiment: neutral → positive
Follow-ups
Follow up on WhatsApp, book on the calendar. Right after the call ends.
Send a confirmation, a document or a payment link on WhatsApp through WhatsApp Business once the call ends. Bookings go to Google Calendar or Calendly, and your team gets a Slack message when a call needs them.
- Confirmations, documents and payment links on WhatsApp
- Bookings sent to Google Calendar or Calendly
- Slack alerts for your team
- Actions set for each agent in the studio
Agents/Riya · Home-loan leads
Conversation script
Drafted from your descriptionStep 1 · Greet. Namaste {{callee_name}}, I’m Riya, an AI assistant from {{company}}. You asked about a home loan on our site. Is now a good time?
Step 2 · Qualify. Ask about the property city, loan amount and monthly income. Confirm amounts back in lakh.
IF income below {{min_income}} THEN explain eligibility kindly and offer a co-applicant option.
IF caller asks for a person THEN transfer to the advisor desk.
Step 3 · Book. Offer two advisor slots and confirm one. Send details on WhatsApp.
Voice and language
Riya
Warm, calm · Indian English
Knowledge and actions
- northwindfinance.in · 42 pages
- Book advisor slot
- Transfer to advisor desk
- Send WhatsApp summary
Test call · 00:41
Test suite · 24 scenarios
23 passed · 1 to reviewFor developers
Start calls from your own code. A REST API with signed webhooks.
Create and update agents, start calls, run campaigns and push contacts with the REST API. Webhooks for call started, ended and analysed are signed so you can verify each one, and a test button sends a sample event while you build.
- REST API for agents, calls and campaigns
- Push contacts and fetch results
- Webhook signatures you can verify
- Send a test event from the dashboard
1curl https://api.kallix.in/v1/calls \2 -H "Authorization: Bearer $KALLIX_API_KEY" \3 -H "Content-Type: application/json" \4 -d '{5 "agent_id": "agt_riya_homeloans",6 "to": "+919876543210",7 "variables": { "callee_name": "Rahul", "loan_amount": "45 lakh" },8 "webhook_url": "https://your-app.example.com/kallix"9 }'Capabilities
Everything in integrations and api. In one place, for your whole team.
Webhooks
Signed events when a call starts, ends and is analysed.
REST API
Agents, calls, campaigns, contacts and results.
WhatsApp Business
Confirmations, documents and payment links after a call.
CRM sync
Send results to HubSpot, Zoho CRM, Salesforce, LeadSquared and Freshsales.
Google Sheets
Send each call's outcome and fields to a sheet.
Calendars
Book slots into Google Calendar or Calendly.
Slack alerts
Tell the right person when a call needs follow-up.
Zapier and Make
Connect to the other tools your team relies on.
Test events
Send a sample event to check your endpoint before going live.
FAQ
Questions, answered.
Can’t find what you need? Talk to us →
HubSpot, Zoho CRM, Salesforce, LeadSquared, Freshsales, Google Sheets, Google Calendar, Calendly, Slack, Zapier and Make, through webhooks and the API. Any tool that accepts a webhook or can call an API can connect too.
Kallix sends call events and results by webhook, and your CRM or an automation tool such as Zapier or Make writes them where they belong. You can also pull results through the REST API.
Call started, call ended and call analysed. Each request is signed so you can verify it came from Kallix, and a test button sends a sample event.
Yes. Send a confirmation, documents or a payment link through WhatsApp Business once the call ends.
Yes. Use the REST API to start a call with an agent, a phone number and the variables for that contact.
Our documentation covers the REST API and webhooks, with example requests. You'll find it under Resources in the site menu.
Keep exploring
Works with the rest of the platform.
- CampaignsUpload a CSV or push contacts by API, pick an agent and set calling windows in IST. Kallix dials on parallel lines, retries the people who didn't pick up and shows every outcome as it happens.
- Analytics and call logsEach call lands in the log with a recording, transcript, duration, cost and disposition. Analytics turns those calls into connect rate, bookings, spend and the best time to call, by agent and by campaign.
- Agent studioStart from a template or tell Kallix in plain words what the call should achieve. Kallix drafts the script, branches and FAQs, and you refine them, choose a voice, attach knowledge and place a test call from your browser.
Put an agent on the line. Hear one call you in under a minute.
Try a live agent on your own phone, or book a demo and we'll walk you through the platform with your use case.