Yggdrasil — shared durable memory for AI coding agents

Created By

VonderVuflyaa day ago

One shared, durable memory for all your AI coding agents — local-first, MCP, zero-dependency. Decisions, lessons, and project status persist across sessions, tools, and projects.

# memory

# mcp

Overview Content Tools Comments

Overview

🌳 Yggdrasil

One shared, durable memory for all your AI coding agents. Claude Code, Codex, and any MCP host remember your projects — decisions, lessons, and status — across sessions, tools, and projects. Local-first, zero dependencies.

Install (any channel — same engine)

uv (recommended)

uvx --from yggdrasil-memory ygg install

npm / npx

npx yggdrasil-memory install

pipx

pipx install yggdrasil-memory && ygg install

Homebrew (macOS)

brew install VonderVuflya/tap/yggdrasil  && ygg install

ygg install sets up an always-on local engine and registers the MCP tools with Claude Code and Codex.

What it does

🧠 Durable cross-session memory for any MCP-compatible agent
🌐 Cross-project recall — "you solved this before"
🔎 Hybrid retrieval (BM25 + optional local embeddings), cross-lingual
🌱 Background self-learning via a local model (zero API tokens)
🔒 100% local & private — no cloud, no account

MCP tools

ygg_health, ygg_bootstrap, ygg_search, ygg_recall, ygg_remember, ygg_materialize

Source & docs: https://github.com/VonderVuflya/Yggdrasil · Elastic License 2.0

Server Config

{
  "mcpServers": {
    "yggdrasil": {
      "command": "uvx",
      "args": [
        "--from",
        "yggdrasil-memory",
        "ygg",
        "mcp"
      ],
      "env": {
        "YGG_ENGINE_URL": "http://127.0.0.1:42069",
        "YGG_ENGINE_TOKEN": "<your token from ~/.yggdrasil/token — run `ygg install` first>"
      }
    }
  }
}

Recommend Servers

TraeBuild with Free GPT-4.1 & Claude 3.7. Fully MCP-Ready.

Baidu Map百度地图核心API现已全面兼容MCP协议，是国内首家兼容MCP协议的地图服务商。

Howtocook Mcp基于Anduin2017 / HowToCook （程序员在家做饭指南）的mcp server，帮你推荐菜谱、规划膳食，解决“今天吃什么“的世纪难题； Based on Anduin2017/HowToCook (Programmer's Guide to Cooking at Home), MCP Server helps you recommend recipes, plan meals, and solve the century old problem of "what to eat today"

DeepChatYour AI Partner on Desktop

BlenderBlenderMCP connects Blender to Claude AI through the Model Context Protocol (MCP), allowing Claude to directly interact with and control Blender. This integration enables prompt assisted 3D modeling, scene creation, and manipulation.

Zhipu Web SearchZhipu Web Search MCP Server is a search engine specifically designed for large models. It integrates four search engines, allowing users to flexibly compare and switch between them. Building upon the web crawling and ranking capabilities of traditional search engines, it enhances intent recognition capabilities, returning results more suitable for large model processing (such as webpage titles, URLs, summaries, site names, site icons, etc.). This helps AI applications achieve "dynamic knowledge acquisition" and "precise scenario adaptation" capabilities.

MCP AdvisorMCP Advisor & Installation - Use the right MCP server for your needs

AiimagemultistyleA Model Context Protocol (MCP) server for image generation and manipulation using fal.ai's Stable Diffusion model.

Y GuiA web-based graphical interface for AI chat interactions with support for multiple AI models and MCP (Model Context Protocol) servers.

Serper MCP ServerA Serper MCP Server

Jina AI MCP ToolsA Model Context Protocol (MCP) server that integrates with Jina AI Search Foundation APIs.