Your phone as an API for SMS, calls, recordings and transcripts
In-product voice calls in three lines of code
Stage
Not given
Not given
Founded
Not given
Not given
Based in
NO
TW
Pricing model
Paid
Freemium
Pricing
Monthly subscription per connected line (exact price not specified in documentation). Recording and transcription are optional, charged from prepaid credits at rates shown in workspace. Credits are in US dollars and never expire while workspace is active.
Free: 30-minute one-time trial, no credit card required. Explore: $19/month ($190/year) with 800 included minutes. Emerge: $49/month ($490/year) with 2,500 included minutes. Pioneer: $99/month ($990/year) with 6,000 included minutes. Enterprise: custom pricing. Additional 1,000-minute packs: $40 (Fr
Key features
Send SMS messages up to 1,600 characters
Receive incoming SMS and calls as webhook events
Outgoing calls with WebRTC audio for browser or AI
Idempotent messaging with operation status tracking
Model Context Protocol server for Claude and Cursor
Included bridge minutes per month
Conversation scoping per line and number
API rate limiting and fair-use enforcement
Dual-SIM support with separate credentials per line
One-line default UI with Traditional Chinese and English support
Customizable components with CSS variables
Headless core for custom UI implementation
Call routing with queues
Metadata passing for call context
HMAC-signed webhooks for integration
Origin allowlist for security
Encrypted WebRTC audio transmission
Multiple agents without call duplication
Agent Inbox browser-based dashboard
What makes it different
Use your own Android phone and SIM instead of a phone number service
Pay only per connected line; recording and transcription are optional and prepaid
Calls merged on bridge preserve your business number to recipients
Live AI voice support via WebRTC audio tracks
Every resource reports whether it is real or simulated
Eliminates phone numbers and app requirements for customer support calls
Built on LiveKit real-time media infrastructure
Does not record audio, only stores call metadata
Minute-based pay-as-you-go pricing with no surprise charges
CallEmbed