Borrowing it
Nothing to install: this file belongs to duquesnay/obsidian-mcp-ts. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/duquesnay/obsidian-mcp-ts/main/CLAUDE.mdgit clone --depth 1 https://github.com/duquesnay/obsidian-mcp-tsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/duquesnay/obsidian-mcp-ts/claude-md)<a href="https://agentmods.dev/instructions/duquesnay/obsidian-mcp-ts/claude-md"><img src="https://agentmods.dev/badge/instructions/duquesnay/obsidian-mcp-ts/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/duquesnay/obsidian-mcp-ts/claude-md"><img src="https://agentmods.dev/badge/instructions/duquesnay/obsidian-mcp-ts/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.05195 | $0.05195 |
| Opus 5 | $0.02597 | $0.02597 |
| Sonnet 5 | $0.01039 | $0.01039 |
| Haiku 4.5 | $0.00519 | $0.00519 |
Grade A, and why
obsidian-mcp-ts CLAUDE.md scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Check Obsidian plugin is running: `curl -k https://127.0.0.1:27124/` How it starts
The opening of the file, as written. The whole thing — 599 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Agent Usage Requirement
MANDATORY: Always use specialized agents for development work. Delegate all tasks using the Task tool - never perform complex work directly.
Project Overview
obsidian-mcp-ts is a TypeScript Model Context Protocol (MCP) server that provides an interface for AI assistants to interact with Obsidian vaults via the Local REST API community plugin. It enables reading, writing, searching, and managing notes programmatically.
Key Features:
- Full TypeScript implementation with strict typing
- Dynamic tool discovery with metadata and categorization
- High-performance utilities (LRU cache, request deduplication, batch processing)
- Comprehensive error handling with actionable suggestions
- Clean architecture with separation of concerns
Development Commands
Setup and Dependencies
# Install dependencies
npm install
# Run in development mode with auto-reload
npm run dev
# Build TypeScript to JavaScript
npm run build
# Run built server
npm start
Testing
# Run all tests
npm test
# Run unit tests only
npm run test:unit
# Run integration tests
npm run test:integration
# Run E2E tests (requires Obsidian with REST API)
npm run test:e2e
# Test in watch mode
npm run test -- --watch
Debugging
# Use MCP Inspector for interactive debugging
npx @modelcontextprotocol/inspector tsx src/index.ts
# View logs on macOS
tail -f ~/Library/Logs/Claude/mcp-server-obsidian-mcp-ts.log
# Environment setup for development
export OBSIDIAN_API_KEY=your_api_key_here
export OBSIDIAN_HOST=127.0.0.1 # Optional, defaults to 127.0.0.1
Architecture
Core Components
-
src/index.ts - MCP server entry point
- Initializes server with stdio transport
- Registers tools dynamically
- Handles server lifecycle
-
src/tools/ - Tool implementations
- Each tool is a class extending BaseTool
- Includes metadata (category, keywords, version)
- Dynamic discovery at runtime
- 33 tools across 6 categories
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.
- 9d ago First seen · 599 lines · 5,195 tokens per session scan A feb58cf68e2f
obsidian-mcp-ts CLAUDE.md is an instructions file published in the GitHub repository duquesnay/obsidian-mcp-ts (5 stars, last pushed 5mo ago), licensed MIT. It adds 5,195 tokens to every session, about $0.0260 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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