Obsidian Codex MCP vs Hatchdoor

In-depth architectural comparison of the Obsidian Codex MCP and Hatchdoor MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Obsidian Codex MCP when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: OBSIDIAN_VAULT_PATH, OBSIDIAN_READ_ONLY, OBSIDIAN_BACKUP_ON_WRITE.
• Primary tools included: configure_vault, get_note, create_note.

Explore Obsidian Codex MCP Details

H

Choose Hatchdoor when:

• You need dedicated capabilities in the Knowledge & Memory domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: MCP access for reading and modifying Markdown notes, Keyword and semantic search, Multi-vault hosting with separate agent scopes.

Feature & Specification Comparison

Specification	Obsidian Codex MCP dot-RealityTest Knowledge & Memory	H Hatchdoor Knowledge & Memory
Summary	Local-first Obsidian vault MCP server for Codex, Claude Desktop, and other MCP clients. Works directly with markdown files, no Obsidian plugin, API key, cloud service, or running Obsidian app required. Includes read-only mode, backup-on-write, path isolation, and setup examples.	Self-host your Obsidian vaults: a web UI for you, MCP for your AI agents. No Obsidian, no plugins.
Category & Scope	Knowledge & Memory

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "dot-realitytest-obsidian-codex-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "dot-realitytest-obsidian-codex-mcp"
      ],
      "env": {
        "OBSIDIAN_VAULT_PATH": "YOUR_OBSIDIAN_VAULT_PATH_HERE",
        "OBSIDIAN_READ_ONLY": "YOUR_OBSIDIAN_READ_ONLY_HERE",
        "OBSIDIAN_BACKUP_ON_WRITE": "YOUR_OBSIDIAN_BACKUP_ON_WRITE_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "hatchdoor": {
      "url": "http://127.0.0.1:42824/mcp"
    }
  }
}

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