Give coding agents and agentic workspaces direct access to your documents: Claude Code, Codex, OpenCode, OpenClaw, and Hermes Agent with a one-line install, Grok Build and Cursor read the Claude skill directory automatically, so the claude install covers them; any other skill-capable client can copy the same files (gno skill paths prints where they live), and everything else can reach the same index through the CLI or MCP. Install the retrieval protocol with gno agents install alongside the connector. It teaches the harness when to retrieve, how to choose a search path, and how to cite and maintain a second brain or LLM wiki. The agent retrieves passages as needed. The same skill and opt-in MCP write path captures notes with provenance; watch, daemon, or a scheduled gno index keep the corpus current on the cadence you wire.