Claudian is a well-documented, actively maintained (MIT-licensed, sponsored) Obsidian plugin that hosts multiple AI coding-agent CLIs inside a vault; it consumes MCP servers as a client rather than exposing MCP tools itself, so no server-side tool list or install_config applies.
Claudian is an open-source (MIT-licensed) Obsidian plugin that embeds AI coding agents — Claude Code, Codex, Grok Build, OpenCode, and Pi — as collaborators inside an Obsidian vault. It turns the vault into the agent's working directory, enabling file read/write, search, bash execution, and multi-step workflows via a chat sidebar, inline text editing, slash commands, and @mentions. Claudian itself is not an MCP server; it functions as an MCP-capable client, letting the Claude Code harness connect to external MCP servers over stdio, SSE, or HTTP from within Obsidian.
Recommended: in Obsidian, go to Settings → Community plugins → Browse, search for "Claudian", install, then enable it; or install directly from the community plugin page. From source: clone the repo into the vault's .obsidian/plugins folder, run npm install and npm run build, then enable "Claudian" in Settings → Community plugins.