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How-To Guides Last updated: 23 July 2026

Voice notes

Dictate coding tasks hands-free — while walking, driving, or away from a keyboard. Untether transcribes your Telegram voice notes via a Whisper-compatible en...

Nathan Schram
By Nathan Schram Founder, Little Bear Apps

Dictate coding tasks hands-free — while walking, driving, or away from a keyboard. Untether transcribes your Telegram voice notes via a Whisper-compatible endpoint and runs them as normal text prompts.

Enable transcription

=== “untether config”

```sh
untether config set transports.telegram.voice_transcription true
untether config set transports.telegram.voice_transcription_model "gpt-4o-mini-transcribe"

# local OpenAI-compatible transcription server (optional)
untether config set transports.telegram.voice_transcription_base_url "http://localhost:8000/v1"
untether config set transports.telegram.voice_transcription_api_key "local"
untether config set transports.telegram.voice_transcription_language "en"
```

=== “toml”

```toml
[transports.telegram]
voice_transcription = true
voice_transcription_model = "gpt-4o-mini-transcribe" # optional
voice_transcription_base_url = "http://localhost:8000/v1" # optional
voice_transcription_api_key = "local" # optional
voice_transcription_url_allowlist = ["127.0.0.0/8"] # required for a loopback/private endpoint (see below)
voice_transcription_language = "en" # optional ISO-639-1 hint — stops wrong-language guesses on short notes
```

Set OPENAI_API_KEY in your environment (or voice_transcription_api_key in config).

To use a local OpenAI-compatible Whisper server, set voice_transcription_base_url (and voice_transcription_api_key if the server expects one). This keeps engine requests on their own base URL without relying on OPENAI_BASE_URL. If your server requires a specific model name, set voice_transcription_model (for example, whisper-1).

Local/private endpoints need an allowlist (v0.35.4+) Since v0.35.4 the transcription base URL is SSRF-validated (#381) — a loopback or private-network host (like http://localhost:8000/v1) is rejected to stop a misconfigured URL exfiltrating voice audio to an internal service. To use a local Whisper server, opt it back in with a CIDR/IP allowlist:

```toml
voice_transcription_url_allowlist = ["127.0.0.0/8"]   # or your private range, e.g. an Azure private-link CIDR
```

The default public path (`api.openai.com`, i.e. `base_url` unset) skips validation and needs no allowlist.

Hot-reload Voice transcription settings (voice_transcription, model, base URL, API key) can be toggled by editing untether.toml — changes take effect immediately without restarting (requires watch_config = true).

Behavior

When you send a voice note, Untether transcribes it and runs the result as a normal text message. If transcription fails, you’ll get an error message and the run is skipped.

You 🎤 (voice note — 0:12)

Untether 📝 “Add error handling to the upload function and make sure it retries on timeout”

working · claude · 0s

▸ Read `src/upload.py`
Voice note followed by transcribed text and agent run output
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