# Hark > When your agents need a word — voice bridge for Herdr coding agents. Speak blocked questions, listen for answers, deliver with stale-safe routing. Hark is open-source software (`hark` CLI + handsfree skill) that lets an operator supervise multiple [Herdr](https://herdr.dev/) coding agents by voice. Cloud STT/TTS only; no local speech models required. Multi-session (local + SSH). Human stays in the loop. ## Docs - [Product](https://github.com/ultradyn/hark/blob/master/docs/PRODUCT.md): goals and non-goals - [Architecture](https://github.com/ultradyn/hark/blob/master/docs/ARCHITECTURE.md): handsfree path, library vs daemon - [Software spec](https://github.com/ultradyn/hark/blob/master/docs/SPEC.md): normative behaviour - [Protocol](https://github.com/ultradyn/hark/blob/master/docs/PROTOCOL.md): HEP event schema - [Herdr integration](https://github.com/ultradyn/hark/blob/master/docs/HERDR.md): multi-session contract - [Safety](https://github.com/ultradyn/hark/blob/master/docs/SAFETY.md): risk levels, distrust pane text - [Audio design](https://github.com/ultradyn/hark/blob/master/docs/AUDIO_DESIGN.md): gate, ducking, half-duplex - [Hark skill](https://github.com/ultradyn/hark/blob/master/skill/hark/SKILL.md): handsfree orchestrator procedure ## Optional - [Site](https://hark.xk.io/): marketing / install - [Install script](https://hark.xk.io/install.sh): one-line CLI + skills install - [GitHub](https://github.com/ultradyn/hark): source and issues - [npm package](https://www.npmjs.com/package/@ultradyn/hark): skills distribution