Agent Call is a private, USB-connected cellular gateway that transforms a rooted Android phone into a secure voice endpoint for local AI agents. It enables real cellular calls, local recordings, and PC microphone routing without requiring third-party VoIP accounts.

I flashed this on a spare POCO M2 Pro, and it gave my desktop AI tools direct access to an actual SIM card for outgoing calls. Having Hermes parse live conversations while the audio routes straight through my PC headset feels incredibly practical for managing daily tasks.

Real cellular calls happen through your existing SIM instead of paid internet phone services.
Local agents gain instant voice control via a standard stdio MCP server for Hermes or OpenClaw.
Live speech processing runs directly through OpenAI, ElevenLabs, or Supertonic local models.
Private synchronization pulls your contacts, call history, and audio recordings strictly over the USB wire.
Failsafe policies immediately stop dialing if the desktop connection drops or recording fails.

Support & Requirements

Android Version: Android 8.0 (API 26) or newer.
Root Type: Magisk (tested on v30.7 with SELinux Enforcing).
Extra Hardware: A Windows or Linux PC connected via an authenticated USB cable.

How to Install

Copy the AgentCall-privileged-magisk.zip file to your phone's internal storage.
Open the Magisk manager, head to the Modules tab, select the zip file, and flash it.
Reboot the device and immediately set Agent Call as your default Phone application.

Most AI voice projects force you to buy expensive SIP trunks or rely on web-based calling. Agent Call cuts out the middleman entirely. Your desktop AI acts like a real assistant making standard phone calls from a genuine number. All data stays local between your phone and PC, meaning your contacts and call logs never hit a random cloud server. It is built strictly for privacy and hardware-level control.