Show HN: Hey Spark – open-source voice assistant for your laptop, any LLM brain

Category: ai-ml

Tags: voice-assistant, llm, mcp, speech-recognition, local-first

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 6)

Hey Spark is an always-listening desktop voice assistant that runs wake-word detection and speech recognition locally on CPU, while routing the reasoning to Claude, Hermes, or any OpenAI-compatible/local LLM. It integrates MCP connectors with spoken confirmation before side-effecting actions, and offers configurable wake word, VAD, STT, TTS, and personality.

Target audience: power users and developers wanting a voice interface to LLM agents on their laptop

Repository: https://github.com/contextuai/hey-spark · Python · NOASSERTION · 3 stars

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