Audio Loop MCP — plain-English guide

What this is

A small local tool that lets Claude hear what your computer actually plays through the speakers. It can also talk (using Windows' built-in voice) and turn recorded audio back into text — all on your machine, nothing sent to the cloud.

Why it exists

WorkWingman must work with screen readers (software that reads the screen aloud for blind users). Our existing tests check what the screen reader intends to say. But a computer can intend to say something and still play nothing — a broken audio driver, a muted device, the wrong output. This tool closes that gap: the screen reader speaks, we record the real sound coming out, convert it to text with a local speech-recognizer (Whisper), and check the words match what should have been said.

What it can do

Ask Claude to…	What happens
speak	Says your text out loud through Windows' voice
record_loopback	Records whatever the computer is playing (up to 2 minutes)
transcribe	Turns a recorded WAV file into text, locally
list_audio_devices	Shows the speakers/outputs Windows knows about
round_trip_test	Speaks a phrase, records it, transcribes it, and scores how well it survived the trip
listen_and_transcribe	Just listens for a while (e.g. while a screen reader talks) and reports what it heard

Privacy

Everything runs on your PC. The one-time exception: the first transcription downloads the Whisper model file from the internet (a public, well-known model). After that, no network at all.

Where recordings go

Temporary WAV files under your Windows temp folder (%TEMP%\audio-loop-mcp\). Delete them any time.