Platform - Lehar

Lehar is a multi-tenant voice-AI platform built on a real-time Media Layer. You create and configure AI agents that talk to end users over the web (WebRTC) or phone (outbound SIP), plus WhatsApp text and voice, and run outbound campaigns.

Components

Component	Role
Control plane	System of record (workspaces, users, keys, agents, sessions, campaigns). Creates rooms, dispatches the agent, mints tokens, runs the knowledge base and the campaign engine. This is the API you integrate with.
Voice agent	Worker that joins the room and runs the speech loop (STT → LLM → TTS), tools, and knowledge-base lookups.
Media Layer	Real-time audio transport and dispatch; outbound SIP for phone calls.
Campaign Engine	Durable orchestration for outbound voice and WhatsApp campaigns.
Knowledge base (Vector Store)	Vector search for retrieval-augmented answers.

Session flow

Channels

Web voice — a browser participant connects to a media room with a short-lived token.
Outbound phone — the agent dials the recipient over SIP.
WhatsApp — text conversations, optionally escalating to a voice call.

Where to go next

Quickstart

Start your first session.

API Reference

Integrate the control-plane API.