obsidian-semantic-mcp: Instructions file for Claude Code

CLAUDE.md

obsidian-semantic-mcp CLAUDE.md is an instructions file for Claude Code from artificemachine/obsidian-semantic-mcp. It costs 1,156 tokens per session, scanned A, original, Apache-2.0.

Project instructions for Obsidian Semantic MCP, a Python service that provides meaning-based search across Obsidian notes using PostgreSQL and Ollama.

In plain words
What is it for?
Use them to install dependencies, start the server or dashboard, check service health, preview setup actions, and rebuild or wipe the search index.
Why use it?
They document the required services, setup commands, rebuild process, tests, and the command-line tool named osm.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is artificemachine/obsidian-semantic-mcp's own configuration. It tells Claude Code how to work on obsidian-semantic-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything obsidian-semantic-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to artificemachine/obsidian-semantic-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/artificemachine/obsidian-semantic-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/artificemachine/obsidian-semantic-mcp

Made for: Claude Code.

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Per session 1,156 This file is loaded in full into every session.
When invoked 1,156 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01156 $0.01156
Opus 5 $0.00578 $0.00578
Sonnet 5 $0.00231 $0.00231
Haiku 4.5 $0.00116 $0.00116

Measured 9d ago against content hash 69a6fd23a401, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

obsidian-semantic-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian Semantic MCP

Python MCP server — semantic search across an Obsidian vault using pgvector + Ollama.

Terminology: osm means the Obsidian Semantic MCP CLI (osm init, osm dashboard, etc.), not OpenStreetMap.

Build & Run

# Full stack (postgres, ollama, mcp-server, dashboard)
OBSIDIAN_VAULT="/path/to/vault" docker compose up -d

# Rebuild after code changes
docker compose up -d --build mcp-server dashboard

# Wipe all data and re-index from scratch
docker compose down -v

Test

uv run pytest -q

Key Commands

# Install deps
uv sync

# Run server natively
OBSIDIAN_VAULT="/path/to/vault" DATABASE_URL="postgresql://localhost/obsidian_brain" uv run python3 src/server.py

# Run dashboard
OBSIDIAN_VAULT="/path/to/vault" uv run python3 src/dashboard.py

osm CLI

osm init                                              # Interactive setup wizard
osm init --mode 3 --vault /path --persistent          # Non-interactive (agent/script friendly)
osm init --dry-run                                    # Preview all actions without making changes
osm status                                            # Check service health
osm dashboard                                         # Open monitoring dashboard in browser
osm tunnel                                            # Reconnect SSH tunnel (remote Ollama)
osm rebuild                                           # Rebuild Docker images
osm remove                                            # Stop services, wipe volumes and config
osm remove --yes                                      # Non-interactive teardown (agent/script friendly)
osm help                                              # Full flag reference

init flags: --mode, --vault, --pg-password, --persistent / --no-persistent, --data-dir, --ssh-host, --ssh-user, --ssh-port, --ssh-key, --vault-remote remove flags: --yes (skip confirmation)

Version

Current: 0.12.2 (pyproject.toml). Entry points: osm (CLI via osm_init:main), obsidian-semantic-mcp (MCP server via src.launcher:main).

Read the full file on GitHub · 108 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 108 lines · 1,156 tokens per session scan A 69a6fd23a401

Subscribe to this mod's changes

obsidian-semantic-mcp CLAUDE.md is an instructions file published in the GitHub repository artificemachine/obsidian-semantic-mcp (1 stars, last pushed 8d ago), licensed Apache-2.0. It adds 1,156 tokens to every session, about $0.0058 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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