Your phone as an API for SMS, calls, recordings and transcripts
A typed decision API for routing, classification, and scoring
Stage
Not given
Not given
Founded
Not given
Not given
Based in
NO
CA
Pricing model
Paid
Paid
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.
$0.040 USD per million input tokens; output is free
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
Choice question type with multiple options and probability scores
Boolean question type for true/false judgments with probability
Score question type with min/max range and level probabilities
Filter list endpoint for ranking JSON items by instruction match
Support for image and audio input with Crossroads-M model
Idempotency keys for safe retries without duplicate charges
Rate limiting with 120 requests per minute default and 4 concurrent requests
Multiple question types per request with single round trip
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
Returns probability scores for every answer to guide decision-making confidence
Supports image and audio analysis alongside text with dedicated audio-trained model
Filter lists by instruction match without writing text generation code
Typed output constrains format while preserving flexible judgment logic
Crossroads