VOICE BOUTIQUE · AI VOICE AGENTS

AI voice agents that answer
24/7 — confidently, in your language

LionVoice — VOICE boutique: an AI voice agent that answers your business calls around the clock, takes action and speaks your customers' language. Per-second billing. Built in the EU.

Start now See pricing

From €19/mo · per-second billing · no hidden fees

Everything calls need — in one place

A European platform with everything calls need: assistants, knowledge base, phone numbers and a full API — self-serve from day one.

Assistants with prompts

Create and edit AI agents: system prompt, first message, voice (Lion AI voices), language (LT/LV/EN/RU), max duration, voicemail behaviour.

Knowledge base

Upload your own texts (prices, FAQ, terms) — the agent answers from your knowledge, never invented.

Phone numbers (DID)

Add your numbers (kalbu.lt or any SIP) and assign an agent to each. The numbers stay yours.

Best-in-class speech

Our in-house voice engine delivers accurate Lithuanian recognition and the Sari voice — a real conversation, not robotic reading.

Analytics and transcripts

Every call's duration, cost, turns, voicemail result and full transcript — in the dashboard and via API.

Everything via API

REST API controls everything A–Z: agents, knowledge, numbers, calls, billing. Bearer key — created in the dashboard.

Simple pricing

Monthly fee + included minutes. Overage is paid from your wallet, billed per second from answer (15 s minimum).

API — control everything A to Z

Create a key in the dashboard and hand it to your agent — it can create assistants, upload knowledge, assign numbers and read calls on its own.

# Create an assistant curl -X POST https://api.lionvoice.app/api/v1/agents \ -H "Authorization: Bearer lv_live_…" \ -H "Content-Type: application/json" \ -d '{"name":"Sales","prompt":"You are…","voice":"Sari","language":"lt"}' # Upload a knowledge-base file curl -X POST https://api.lionvoice.app/api/v1/files \ -H "Authorization: Bearer lv_live_…" \ -d '{"filename":"prices.txt","content":"…"}' # Assign a number to the agent curl -X PATCH https://api.lionvoice.app/api/v1/phone-numbers/1 \ -H "Authorization: Bearer lv_live_…" \ -d '{"agent_id":2}'

Endpoint	Purpose
GET /tenant	Your account, plan and SIP configuration
GET/POST/PATCH/DELETE /agents	Assistants — prompt, voice, language, model
GET/POST/PATCH/DELETE /files	Knowledge-base files
GET/POST/PATCH/DELETE /phone-numbers	Phone numbers and agent assignment
GET /calls · /calls/{uuid}	Calls with transcripts
GET /analytics · /usage	Usage and estimated COGS
POST /keys · DELETE /keys?id=	API key management
POST /topup	Top up your prepaid wallet (Stripe Checkout)

Frequently asked questions

Ready for your agent to speak?

Creating an assistant takes less than five minutes.

AI voice agents that answer24/7 — confidently, in your language