Show HN: Relay – A Mac app that adds /relay command to Claude, Codex and Cursor

Category: devtools

Tags: macos, ai-assistant, chat-integration, privacy, accessibility

Score: 5.7/10 (Innovation: 6, Technical: 6, Documentation: 5, Utility: 5)

Kanary Relay is a Mac app that adds a /relay command to Claude, Codex, and Cursor apps, allowing users to send a quoted snippet of the current chat to another AI assistant for a 'second opinion'. It works by reading local transcripts and using macOS Accessibility to write into the other app, with a copy/paste fallback. The project is interesting for its cross-app integration and privacy-focused design, but remains a niche utility limited to macOS and specific AI tools.

Target audience: AI power users, developers using multiple AI assistants

Repository: https://kanary.to/agents

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