Meeting Copilot

The problem

Note-taking during customer calls kills presence. Cloud meeting bots are creepy, record everything, and send your conversations to unknown third parties. Most 'AI meeting assistants' are glorified transcribers that dump a summary after the call ended — too late to be useful.

What I built

A desktop copilot that listens to a live call (system audio + microphone), transcribes in real time, and whispers context-aware coaching in a side panel: talking points, follow-up questions, objection-handlers, and a rolling summary. Runs locally; only the STT stream leaves the machine.

Architecture

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  Electron shell

  Always-on-top transparent overlay, configurable hotkeys, system tray integration

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  Audio capture

  Windows WASAPI loopback for system audio + default microphone, mixed to a single 16 kHz PCM stream

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  Streaming STT

  Deepgram streaming API with speaker diarization, interim + final results

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  Transcript buffer

  Rolling window with speaker labels, feeds the agent with a configurable look-back

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  Claude Agent SDK whisper

  Tool-using agent that emits structured whispers (talking points, questions, summary) on a configurable cadence

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  Overlay UI

  React, renders interim transcript, current whisper, rolling summary, post-call exportable notes

Tech stack