Complete API access, real-time webhooks, and custom functions. Integrate voice AI into your applications or extend the platform with custom capabilities.
API
Webhooks
Functions
Audio Stream
What you can build with the Voice AI API
Initiate AI voice calls programmatically. Pass custom data, select agents, and specify callback URLs
Create, update, and configure voice AI agents via API. Set prompts, voices, languages, and behavior
Retrieve call logs, transcripts, recordings, and analytics. Export data for your systems
Upload documents, manage namespaces, and query the knowledge base programmatically
Create and manage bulk calling campaigns. Upload contact lists, track progress, get results
Manage workspace settings, credentials, and integrations via API
Key endpoints for voice AI integration
Initiate an outbound call. Parameters: phone number, agent ID, custom variables, callback URL. Returns: call SID, status
Receive inbound call notifications. Configure in telephony provider. Returns: TwiML/response XML
Retrieve call details including transcript, recording URL, duration, outcome, and collected data
Aggregate statistics: call volume, success rates, average duration, outcomes by agent/campaign
Create a new voice agent. Configure: name, prompt, voice, language, LLM provider, knowledge base
Query knowledge base directly. Parameters: query text, namespace, top_k. Returns: relevant chunks
Real-time notifications for your backend
Fired when a call begins. Includes: call_id, phone, agent_id, direction (inbound/outbound)
Fired when call completes. Includes: duration, outcome, transcript_url, recording_url, collected_data
Real-time transcription updates during call. Includes: speaker, text, timestamp, confidence
Fired when AI collects data point. Includes: field_name, value, call_id. For lead qualification
Fired when call transfers to human. Includes: target_number, transfer_reason, context
Fired when in-call payment completes. Includes: amount, transaction_id, payment_method
Extend AI capabilities with your own APIs
Define functions that call your API during conversations. AI decides when to invoke them based on conversation context
Fetch customer data, order status, account details from your backend. AI uses the data to respond accurately
Create records, update CRM, log events in your systems. AI triggers actions based on conversation outcomes
Store API keys securely. Reference as {{vault.your_key}} in function definitions. Never exposed in logs
Secure API access
Workspace-scoped API keys. Create multiple keys for different environments (dev, staging, prod)
Webhook payloads include signature for verification. Prevent spoofed webhook calls
Enterprise feature: restrict API access to specific IP ranges
Common integration questions
Step-by-step tutorials
AI-powered phone calls from ₹6/min — or bring your own AI keys and pay just ₹1.5/min platform fee
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Real demo calls showcasing low latency and natural conversations in multiple Indian languages
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