I built an Obsidian plugin that connects to Claude Code, Gemini CLI, or Codex - whatever you have installed. No API keys to configure in the plugin; it just delegates to the CLI tools you already use.
The LLM gets full access to your vault - it can read notes, create files, search. Ask "what did I write about X last month" and it finds and reads the files.
Uses ACP (Agent Client Protocol) for structured data passing and persistent connections.