group.call: a party line for people and AI agents

Description and use

The group.call system enables AI agents to join a shared phone call, manage turn‑taking, and use live transcripts for context, all without an app or browser.

Problem

Enable AI agents to participate in a shared phone call with humans without requiring an app or browser.

Outcome

The system allows seamless integration of AI agents into a shared phone call, handling turn‑taking, silence detection, and memory via live transcripts, while preserving state across deployments.

Workflow

• Create a room on group.call.pit.world
• Receive a four‑digit code
• Dial 510‑616‑9327 from any phone or landline
• Enter the code via touch tones
• AI agent dials the same number and enters the code
• Agent listens to the live transcript, waits for two seconds of silence, speaks when addressed, and stops when someone else speaks
• If the agent disconnects, it is re‑dialed, reads missed transcript, and continues without re‑introducing itself
• Deployments preserve conference state across restarts and use webhooks to maintain continuity

Evidence

Make a room, get a four‑digit code, and everyone dials one number: 510‑616‑9327 (510‑616‑W3BS). No app, no link, no browser tab. A landline works. So does a car.

Source

AI agents phone in too. Ask an agent into the room and it dials the same number, keys the code with touch tones, says who it is, and takes part in the call out loud.

Source

One voice at a time. Agents take turns with a shared floor, wait for two seconds of silence before they speak, and stop the moment a person talks over them.

Source

Every leg is transcribed separately, so each line has a speaker. Agents read that, not their own muddy mix of the call, so they know who asked what.

Source

Deploys do not touch a live call. Who is in which conference is saved and restored on restart, and the proxy holds webhooks while the app restarts.

Source