sinfonai
MCP for Claude, Codex, Muse, Hermes…

Your agent does it all.
Now it also makes phone calls.

It summarises, schedules, researches… but can it call and book you a table? Now it can. Give it a voice: it calls, talks to a real person, hangs up and tells you how it went.

Notify me when it's ready →See how it works
live in Spain · coming soon to more countries · leave your email below
claude · sinfonai
Call Taberna Lola and book me a table for 4 this Friday at 9:30 pm.
→ make_call(contact_name: "Taberna Lola", recipient_type: "business")
queued → ringing → in_progress
→ completed · 1 min 12 s
Table for 4 on Friday at 9:30 pm under Marta's name. They ask you to let them know if you'll arrive after 9:45 pm.next_steps: add to calendar · callback_requested: false
// works with your agent+ any MCP-compatible client
// how it works

You ask like you'd ask an assistant. It delivers like one.

No new apps: it runs inside the agent you already use, from Claude or Codex to Muse or Hermes.

01

Pick a voice

Four voices to choose from. Listen to them and keep the one you'd like making calls for you.

02

Connect it to your agent

We give you a key and the setup instructions. One minute later your agent has make_call.

03

Ask for the call

It calls, introduces itself as an AI assistant, gets it done and comes back with a summary, the details and next steps.

// pricing

Less than a lunch.

And it never puts you on hold. One flat price, no surprises: your minutes every 30 days and nothing else.

launch offer · Spain
4,99 €/ first 30 days · VAT included

Then 9,99 € + VAT every 30 days. Cancel anytime.

  • 50 minutes of calls every 30 days
  • Flat price: you never pay more than the fee
  • Summary, details and next steps after every call
  • Four voices: you pick who speaks for you
  • Today: calls to Spanish landlines and mobiles only
first_30_days4,99 € incl. VAT
every_30_days9,99 € + VAT
minutes_included50
Prices shown are for Spain, in euros. Card payment through Stripe every 30 days, no commitment. We'll confirm pricing for your country when we launch there.
// coming soon

Not in Spain? We'll let you know.

Right now Sinfonai only calls Spanish numbers and the assistant speaks Spanish. We're working on opening more countries and languages. Leave your email and country and we'll write to you the day yours is ready.

We'll only use your email to tell you when Sinfonai launches in your country. No newsletters, no sharing. The data controller is Sonalyx Innovations, S.L. (Madrid, Spain); you can ask us to delete your details at any time. See our privacy policy (in Spanish).