Show HN: Sinain captures screen and audio in KG, shares it with agents/peers

Category: infrastructure

Tags: knowledge-graph, screen-capture, mcp-server, privacy, ai-agents, macos

Score: 8.0/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 7)

Sinain is a context OS that continuously captures screen and audio, distills them into a private knowledge graph, and makes that context accessible via MCP for AI agents, a web UI, and a screen-capture-invisible HUD overlay. It is interesting for its agent-agnostic design, strong privacy controls with fully offline capability, and high benchmark performance on long-context recall.

Target audience: backend devs, devops, ai engineers

Repository: https://anthillnet.github.io/sinain-hud/ · TypeScript · MIT · 7 stars

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