Phone number for your app
in one prompt
Numbers, calls, SMS and a voice agent. Via API and MCP.
€2 to try it out. No card or contract.
Try it now
The volai voice agent picks up. Ask it anything - like how much an SMS costs.
This call is a demo. We process the audio to produce a transcript and the call is recorded. Privacy policy
Add calls and SMS to my app via volai: https://volai.be/SKILL.md
MCP: https://volai.cz/mcp · llms.txt: https://volai.be/llms.txt
Preview of the volai portal
Works with the tools you already build in
Numbers in your country
A number in your country for €1.63/30 days, for calls without SMS. Czech numbers too. No contract or activation fee.
Calls and SMS
Outbound €0.0538/min to Belgium and €0.0384/min to Czechia, inbound €0.0209/min. SMS to Czechia and Slovakia €0.0567.
Voice agent
Answers and places calls in English and more than 20 other languages. €0.105/min plus the call rate.
Calls and SMS number
Prague number for €2.05/30 days excl. VAT. SMS €0.105/segment. Activation usually within 1 business day.
Coverage
A local number in 20 countries
Buy a number in your customers' country in the portal, over the API or via MCP. No contract.
Belgium
+32 2 ··· ···
Landline, Brussels · calls only
Product
Call
curl -X POST https://volai.cz/v1/calls \
-H "Authorization: Bearer vk_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"to": "+420777123456", "from": "+420601234567"}'{
"id": "call_9d4e2b7f",
"status": "initiated"
}- Inbound call
- €0.0209/min
- Incoming call with an AI agent
- €0.125/min
- €0.0209/min for the call + €0.105/min for the agent.
- Number in your country
- €1.63/30 days
Prices exclude VAT, topped-up credit never expires.
Optional monthly plan from €20.42API and MCP
Connect
REST API
A vk_… key and curl. No SDK required - responses are JSON with the price in hundredths of a credit.
MCP server
Webhooks with HMAC
Bring your own agent over SIP
Phone platform
- Numbers
- Calls and SMS
- Voice agent
- REST API
- MCP server
- Webhooks
Billing by the second
Agent calls billed by the second. Voice messages from your own number: 60-second minimum.
Free sandbox
Verify your email and get €2 in credit plus a test number that an agent will answer.
Data in the EU
Servers in Frankfurt, numbers through European providers, invoices that satisfy Czech accounting rules.
Voice agent
Talk
Answers you can trust
The agent only knows what you give it: context from your app, opening hours, your calendar. It sends a transcript and summary of every call over a webhook.
AI receptionist
A ready-made prompt for your industry
Dental clinics, auto repair, ecommerce and more - pick an industry and see exactly how the agent talks and what it costs.
An AI receptionist for dental clinics that books patients while you're chairside
An AI receptionist for auto repair shops that answers while you're under the car
An AI receptionist for restaurants that takes reservations even during the rush
Frequently asked questions
Didn't find an answer? Email support@volai.eu - we reply fast.
- What do I need?
- Just an email. Your first credit is free, no card required.
- Does it work right away?
- Not always. A local number is activated once the operator has registered and verified it. Activation usually within 1 business day, with no guarantee of an instant start.
- Do you support inbound SMS?
- Local numbers are for calls only and do not receive SMS. Incoming SMS work only with products that support them, such as the Czech mobile number add-on; verification codes are not guaranteed.
- How does billing work?
- Top up credit by card and pay as you go.
- Can I cancel?
- Anytime, with no notice period. We'll refund unused topped-up credit on request.
- Do you record calls?
- Yes, for agent calls: 90 days in the portal, with recording optional. You must inform callers.
- Is this for businesses?
- Yes. Download tax invoices in the portal and add company details in settings.
- How much does an AI receptionist cost a small business per month?
- At 30 two-minute calls a day: €226.05/month excl. VAT, including the number and agent.
- How does the agent sound?
- Natural speech, with a choice of voices and 20+ languages.
- What happens when the AI receptionist can't handle a call?
- With a transfer configured, it passes the call to your phone. Otherwise, it ends it and sends a transcript and summary.
- How fast can I get an AI receptionist running?
- Set up the agent in minutes and connect an active number. You can forward your existing number to it.
Blog
Latest from the blog
Guides, comparisons and notes on telephony.
AI Receptionist
Five Questions Before You Get an AI Receptionist
Price, a 5-minute setup, forwarding a number from O2/T-Mobile/Vodafone, Slovak numbers and VAT - five answers straight from volai's rate card and settings.
September 19, 2026 · 5 min read
AI Receptionist
How Much Does an AI Receptionist Cost
A line-by-line breakdown of AI receptionist pricing on volai: number, minutes, agent surcharge, three volume scenarios, and what Czech competitors charge.
September 2, 2026 · 6 min read
AI Receptionist
Never Miss a Call With an AI Receptionist
Why calls get lost even with a working phone line, what the call.missed webhook tells you, and how an AI receptionist keeps every call answered.
September 2, 2026 · 6 min read