What is Yggdrasil?
Yggdrasil is a MCP server by VonderVuflya that local-first memory for AI coding agents on SQLite/FTS5, curated and semantically de-duplicated, with data stored as plain rows you own. It is listed under Knowledge & memory and has 22 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | VonderVuflya |
| Repository | VonderVuflya/Yggdrasil |
| Popularity | 22 GitHub stars |
| Category | Knowledge & memory |
| Security | Low risk (96/100) |
| Rank | #1,266 of 4,418 MCP servers; #133 in Knowledge & memory |
| License | AGPL-3.0 |
| Last commit | 2026-09-03 |
| Runs | Locally |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is Yggdrasil safe to install?
Yggdrasil scores 96/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Runs on your machine only | Pass |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install Yggdrasil?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/VonderVuflya/Yggdrasil
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add yggdrasil -- <command from README> claude mcp add --transport http yggdrasil <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs Yggdrasil for you:
Add the "Yggdrasil" MCP server from https://github.com/VonderVuflya/Yggdrasil to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.