Mathis Arends mathisarends

Münster, Germany | currently doing my M.Sc. in Information Systems @ FH Münster

Kinda obsessed with voice-driven agents.

Voice & Realtime Agents

🗣️ rtvoice - Framework for real-time voice agents on OpenAI's Realtime API
🎤 vocalbin - Typed async adapters for speech-to-text, text-to-speech, realtime transcription, and translation
👂 wakewordkit - Wake word detection built on openWakeWord, with a pluggable audio input API

🔊 sonosify - Sonos control over UPnP and the S2 API, with a Cloud Integration (playback, queue, groups, events)
💡 hueify - Typed async Python client for Philips Hue CLIP v2, with one API for lights, rooms, zones, scenes, and events
🌅 huerise - Philips Hue sunrise alarm with audio, REST API, and an agent-friendly CLI

🤖 llmify - Type-safe Python library for OpenAI, Azure OpenAI, Anthropic
🧰 agenttoolkit - One provider-neutral definition for tools exposed to LLM agents - schema, availability, metadata, and execution logic in one place
💰 tokenary - LLM API cost calculation based on the LiteLLM model catalog
🧬 cdpify - Type-safe Chrome DevTools Protocol client with Pydantic models, including a codegen tool that generates the client straight from the CDP specification
🚌 transitbus - Type-safe async event bus for Python, Pydantic events with automatic parent/child causality

🎴 prompster-cli - Generate Hitster-style card decks from natural language prompts and Spotify
🎮 prompster-frontend - Web app for playing with self-made Hitster cards
🎵 spotifyify - Typed async Spotify client for Python

📚 arxcli - Fast, minimal, script-friendly CLI for researching papers on arXiv, with human-readable tables and JSON/JSONL for agents
📊 go-withings - Script-friendly CLI for the Withings API - OAuth, weight & body composition, human-readable or JSON output
⌚ fitbitctl - Read-first Go CLI for Fitbit/Pixel Watch health data via Google Health API v4, OAuth 2.0 + PKCE, JSON output
🔉 elevenfx - Go CLI for generating sound effects with the ElevenLabs API