yggdrasil

local MCP server

Installation

Terminal

claude mcp add yggdrasil -e YGG_ENGINE_URL=... -e YGG_ENGINE_TOKEN=... -- uvx yggdrasil-memory

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop, Cursor & other clients

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "yggdrasil": {
      "command": "uvx",
      "args": [
        "yggdrasil-memory"
      ],
      "env": {
        "YGG_ENGINE_URL": "...",
        "YGG_ENGINE_TOKEN": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

Summary

One shared, durable memory for your AI coding agents — local-first, zero-dependency.

Questions

yggdrasil is a local MCP server distributed as the pypi package yggdrasil-memory.

Run: claude mcp add yggdrasil -e YGG_ENGINE_URL=... -e YGG_ENGINE_TOKEN=... -- uvx yggdrasil-memory

Run: codex mcp add yggdrasil --env YGG_ENGINE_URL=... --env YGG_ENGINE_TOKEN=... -- uvx yggdrasil-memory

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