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Yggdrasil MCP server

by VonderVuflya·io.github.VonderVuflya/yggdrasil·v0.16.0·21 stars

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

B83/100grade B
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21 stars

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Yggdrasil tools

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How Yggdrasil compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
83/100
higher than 65% of 48,255 servers
GitHub stars
21
more than 91% of 28,688 servers

Release history: 2 versions in the registry since 2026-08-06, latest 2026-10-22, typically one every 77 days.

Install Yggdrasil in Claude Code, Cursor or VS Code

claude mcp add yggdrasil -- uvx yggdrasil-memory
Add to Cursor

What the publisher says

From the Yggdrasil repository's README, as published. We do not edit it. Read it on GitHub

<!-- mcp-name: io.github.VonderVuflya/yggdrasil --> 🌳 Yggdrasil

Stop re-explaining your project to every new AI session. One local memory for Claude Code, Codex, and every MCP agent — shared across sessions, tools, and projects. Zero dependencies. Nothing leaves your machine.

Install · How it works · Numbers · Compare · FAQ

Read this in: Русский · 简体中文 · Español · Français · 日本語 · Deutsch

Every new chat, your AI forgets. You re-explain the project, the decisions, the gotchas — every time, in every tool. Yggdrasil is a tiny always-on memory that any agent plugs into. Open a new session, in any project, with any AI, and it already knows what you decided, what broke, and what's still open.

$ cd ~/projects/checkout-api && claude        # a brand-new session

🌳 Yggdrasil  (injected automatically at session start)
   • [project_status] payments refactor: idempotency keys added; open: e2e tests
   • [lesson] webhook 401 → signing secret rotated; update env + redeploy

> "have I solved a flaky websocket reconnect anywhere before?"

🌳 recall → found in project `realtime-dash`:
   refresh the token *before* opening the socket, then retry with capped backoff.

No "let me remind you what we did yesterday." It's just there.

🚀 Install

Two commands, inside Claude Code (the plugin launches via uv):

/plugin marketplace add VonderVuflya/Yggdrasil
/plugin install yggdrasil

The engine lazy-starts on first use and generates its own local token — no API key, no cloud, nothing to configure. Codex and Cursor use the same flow.

All other channels — CLI daemon, Homebrew, npm, Claude Desktop, from source…

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Yggdrasil: common questions

Is Yggdrasil MCP server safe?
Mostly: it is graded B (83/100). Read the Yggdrasil safety report
How do I install Yggdrasil?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Yggdrasil need an API key?
Yes. The registry entry asks for YGG_ENGINE_TOKEN.
Is Yggdrasil maintained?
The last commit was 61 days ago (2026-09-03). The latest release is v0.16.0.
What can I use instead of Yggdrasil?
Servers from other publishers that do the same job: Deja Vu MCP server, Concord MCP server and Memorix MCP server. Compare all Yggdrasil alternatives.
How does Yggdrasil compare with other MCP servers?
safety score 83/100 (higher than 65% of 48,255 servers); github stars 21 (more than 91% of 28,688 servers). Full comparison.

Alternatives to Yggdrasil

Same job from other publishers: the closest match first, then the best rated.

All Yggdrasil alternatives →
  • Deja Vu
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    A
  • Concord MCP
    Cross-harness communication and shared work-state for AI coding agents.
    A
  • Memorix
    Local-first project memory with legacy MCP and 2026 discovery compatibility.
    B
  • Claudexor
    Route coding work across Claude Code, Codex, Cursor, and OpenCode with shared context.
    A
  • Nautilus Compass Memory
    Local-first long-term memory for AI agents, with byte-recomputable signed verification receipts.
    B