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Arrowhead — Obsidian Search

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by totocaster · v1.0.0 · MITRepository

Fast Obsidian-aware semantic search for AI agents. Query your Obsidian vault by content, tags, backlinks, and metadata. Makes your AI agent a true knowledge assistant — without sending vault data to the cloud.

Install on your platform

We auto-selected Claude Code based on this skill’s supported platforms.

1

Run in terminal (recommended)

terminal
claude mcp add arrowhead npx -- -y @trustedskills/arrowhead
2

Or manually add to ~/.claude/settings.json

~/.claude/settings.json
{
  "mcpServers": {
    "arrowhead": {
      "command": "npx",
      "args": [
        "-y",
        "@trustedskills/arrowhead"
      ]
    }
  }
}

Requires Claude Code (claude CLI). Run claude --version to verify your install.

About This Skill

What it does

Arrowhead provides fast search and discovery capabilities within Obsidian vaults, acting as a knowledge assistant for both humans and AI agents. It continuously indexes your vault’s content (markdown files and assets) creating full-text, semantic vectors, and graph analytics. This allows for efficient exploration of notes through the command line interface (CLI) or a Claude-ready MCP (Message Channel Protocol) interface.

When to use it

  • Complex Research: Quickly surface relevant information from a large Obsidian vault when conducting research projects.
  • AI Agent Integration: Enable AI agents like Claude to access and reason about your notes for tasks such as summarization or question answering.
  • Note Exploration: Discover connections between notes that might not be immediately obvious through manual browsing.
  • Workflow Automation: Automate note creation, updates, and discovery using the CLI tools.

Key capabilities

  • Background daemon with live filesystem watching
  • Vault-aware indexing respecting .obsidian settings
  • Full-text, semantic, and hybrid search with snippet generation
  • Notes CRUD (Create, Read, Update, Delete) operations via CLI
  • HTTP MCP transport for remote agent access
  • Semantic embeddings using fastembed stored in sqlite-vec

Example prompts

  • "Find all notes related to 'Project Phoenix' using semantic search."
  • "Show me the graph connections between notes tagged with 'meeting'."
  • "Create a new note titled 'Q3 Planning' and add it to the 'projects' folder."

Tips & gotchas

Arrowhead respects your existing Obsidian .obsidian settings, so ensure these are configured correctly for optimal indexing. The daemon requires system-level privileges (launchd on macOS, systemd --user on Linux) for continuous vault monitoring.

View Repository →

Tags

#obsidian#search#pkm#knowledge-management#vault#local#second-brain
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Details

Version
v1.0.0
License
MIT
Author
totocaster
Installs
0
Updated
Mar 1, 2026
Published
Feb 1, 2026
Repository (canonical source) →

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Passed automated security scans.

Pinned commitd0dd9b7c

Install command fetches the verified snapshot, not the live repository.