Companion for Claude

Companion for Claude is an Obsidian plugin for chatting with Claude using vault notes as context. It supports interactive claude-html artifacts, agent mode with reviewable writes, evidence-backed research, local-model fallback, and an optional local MCP bridge for Claude Code and Claude Desktop.

The vault remains the source of truth. Companion stores conversations and generated work as vault content instead of replacing the notes they came from.

Companion requires a user-provided Anthropic API key or long-term OAuth token. It can also import Anthropic credentials and a base URL from the desktop environment. Local-model backends can be used for offline chat and utility work.