Telephony for AI Agents
Give your AI a real phone number. Unlock a new category of capability.
PUT YOUR AI ON THE PHONE
Every AI agent is missing one thing. A phone number. Firsty gives AI agents a real number in 18 countries, voice and SMS capability, all through a single API. AI agents that cannot pick up the phone cannot complete entire categories of real-world tasks.
For you as a partner
Real-world reach
Enable AI to interact with the real world through voice and SMS.
Zero telecom expertise
No telecom knowledge required.
New use cases
Opens entirely new use cases and revenue streams.
Full documentation
Full documentation available at developers.firsty.app.
For your AI product
Real numbers
A real phone number in 18 countries.
Voice calling
Inbound and outbound voice calling.
SMS and OTP
Two-way SMS messaging and OTP support, ready to plug into any authentication flow.
Stack agnostic
Works with any AI stack or orchestration layer.
Fast response
Sub 1 second API response time.
BUILT FOR EVERY CALL

From an inbound support call to an outbound scheduling task, your AI agent can pick up the phone and complete work in the real world. One API gives it a number, a voice, and the ability to authenticate, anywhere in 18 countries.

What this makes possible
AI support agents
Customer support agents that call users directly to resolve issues.
AI sales agents
Outbound and inbound sales calls handled at scale, fully automated.
AI authentication
AI assistants authenticating users through SMS or voice for secure access.
AI for legacy industries
AI systems interacting with businesses that still run on phone calls, from travel and healthcare scheduling to logistics coordination.
Autonomous AI systems
AI workflows that require a real-world identity to operate independently.
How it works
From phone number to fully operational AI agent.
CONNECT TO API
Start with the documents
Access the full documentation at developers.firsty.app.
PROVISION A NUMBER
Pick a country
Select a country and provision a real phone number for your AI agent in minutes.
ROUTE THROUGH AI
Connect your stack
Connect inbound and outbound call flows to your AI orchestration layer.
GO LIVE
Live on the phone
Your agent can now call, receive calls, send SMS, and authenticate users through OTP.
Proof points
Firsty gives AI agents real phone numbers in 18 countries, with full voice and SMS capability, sub 1 second API response time, and complete documentation at developers.firsty.app.

4.8
Out of 5 on Trustpilot
1.2 M +
Users on the Firsty platform
The telecom layer your AI stack has been missing. A real phone number, real voice and SMS capability, and a single API behind every call your agent makes.
join the revolution
Looking for something more custom? Drop us a line at partners@firsty.app

Questions about the Firsty telephony for AI agents?
We know, it sounds too good to be true. But it’s real. Here’s how.


















