Build Phone Call Capabilities Into Your App
Programmatically initiate AI phone calls, receive webhooks, and access transcripts. Simple REST API with comprehensive documentation.
Simple, Powerful API
Make AI phone calls with just a few lines of code
// Initiate a call
const response = await fetch('https://api.kallyai.com/v1/calls', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
phone_number: '+1-555-123-4567',
task: 'Schedule a dental cleaning appointment for next week',
caller_name: 'John Smith',
language: 'en',
webhook_url: 'https://yourapp.com/webhooks/kallyai'
})
});
const { call_id, status } = await response.json();
// call_id: "call_abc123"
// status: "queued"Everything You Need
A complete API for phone call automation
RESTful API
Simple, well-documented REST endpoints for initiating calls, checking status, and retrieving results.
Webhooks
Real-time notifications when calls complete, fail, or require attention. Integrate with your workflows.
Full Transcripts
Access complete call transcripts, summaries, and extracted data via API responses.
Secure Auth
API key authentication with rate limiting. OAuth 2.0 available for enterprise integrations.
Usage Analytics
Programmatic access to call history, usage metrics, and billing data.
Multi-Language
Make calls in English or Spanish. Specify language per call via the API.
What Developers Build
Integration scenarios and real-world applications
CRM Integration
Automatically initiate follow-up calls from your CRM when deals reach certain stages. Learn more
Appointment Scheduling
Connect with your booking system to automatically confirm or reschedule appointments. Learn more
Customer Support
Deflect routine phone inquiries by having KallyAI make outbound calls on behalf of customers.
Workflow Automation
Trigger calls based on events in your systems. No manual intervention required.
Data Collection
Gather information via phone calls at scale. Get structured data back via the API.
Custom Applications
Build phone call capabilities into your own products and services. Learn more
API Access Coming Soon
Join the waitlist for early access to our developer API
What You'll Get
- Full REST API access
- Sandbox environment for testing
- Webhooks and real-time notifications
- Complete call transcripts via API
- Official SDKs (JavaScript, Python, Go)
- Priority developer support
Early access members will receive special launch pricing and dedicated onboarding support.
Developer Questions
What are the API rate limits?
Developer plans include 100 API calls/minute. Enterprise plans have higher limits and can request custom quotas based on needs.
Is there a sandbox environment?
Yes! All API plans include sandbox access for testing. Sandbox calls are simulated and don't incur charges.
What programming languages are supported?
The API is language-agnostic (REST + JSON). We provide official SDKs for JavaScript/TypeScript, Python, and Go. Community SDKs exist for Ruby, PHP, and Java.
How is API usage billed?
API calls are billed based on successful call minutes, same as the web interface. API access itself is included in Developer and Enterprise plans.
Can I use the API for high-volume campaigns?
Yes, but please contact us first for high-volume use cases. We want to ensure quality and compliance for all calls.
Get Early Access
Tell us about your project and be first in line when we launch