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Voice agent platform for creating and managing AI-powered phone calls with built-in AI agent logic, conversation flow control, and real-time transcription. Best for automated outreach, appointment reminders, and voice-based data collection where the AI handles the full conversation. Unlike ElevenLabs (text-to-speech synthesis) or raw telephony APIs, Retell manages the entire call lifecycle — from dial to hang-up — with an AI agent driving the conversation. 2 endpoints available through Lava’s AI Gateway. See the Retell API docs for full documentation.
Supports both managed (Lava’s API keys) and unmanaged (bring your own credentials) mode.

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Endpoints

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Create an outbound phone call

POST https://api.retellai.com/v2/create-phone-call — Free / minute 
const data = await lava.gateway('https://api.retellai.com/v2/create-phone-call', { body: {"from_number":"+15555550100","to_number":"+15555550200"} });

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Get call details

GET https://api.retellai.com/v2/get-call/call_1234567890abcdef — Free / minute 
const data = await lava.gateway('https://api.retellai.com/v2/get-call/call_1234567890abcdef', { method: 'GET' });

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Next Steps

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