give your AI Agent a phone number
provision phone numbers for AI agents with APIs for SMS, voice calls, and real time streaming
built for
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Launch the mobile service your customers will love.
Why Spenza
built Different, built for AI
- real phone numbers with Guaranteed deliverability
- global phone number provisioning
- programmable SMS and voice APIs
- can be used as a data eSIM
- seamless number porting support
- numbers assigned by physical address
countries
coverage
Uptime
coverage
latency
average response
numbers
provisioned
The Problem
agents need phone numbers
AI agents are increasingly handling customer support, scheduling, and sales conversations but they can’t interact with the largest communication network in the world - the phone System
Spenza solves that, we provide virtual phone numbers designed for AI agents with APIs for voice and SMS.
Everything your AI needs
Three APIs, infinite possibilities for AI communication.
AI phone Numbers
Quickly set up local or international phone numbers for your AI agents using our platform. Gain immediate access to numbers from the US, UK, EU, and more than 40 other countries, all via a single, smooth API request.
SMS API
Send and Receive SMS messages Programmatically, Two-way messaging with delivery receipts and webhook support.
real-time voice streams
Receive live audio streams from calls using SIP or WebRTC. Feed directly to your LLM for real-time AI processing.
Integration
Three Steps, That’s it.
Go from zero to AI-powered phone calls in minutes, not months.
01
provision a Number
POST / API/V1/PURCHASE-ESIM
Get a virtual phone number via a single API call. Choose from US, UK, EU and 40+ countries.
02
connect your AI
POST / API/V1/WEBHOOK/REGISTER
Configure your webhook or SIP endpoint to receive call and sms events in real time.
03
your AI talks to humans
INBOUND----STREAM----RESPOND
Inbound call triggers live audio streams via SIP or WebRTC. Your AI agent Processes and responds.
Use Cases
build for agentic AI
Purpose-built for the next generation of AI-powered communication.
Customer support
Sales outreach
appointment scheduling
voice assistants
global operations
Integration
give your AI Agent a phone number
Start building voice and messaging into your AI agents today.