Local-first memory for AI coding agents stored in SQLite and Markdown, curated and semantically de-duplicated.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add yggdrasil --env YGG_ENGINE_TOKEN='<YGG_ENGINE_TOKEN>' -- uvx yggdrasil-memory~/.codex/config.toml
[mcp_servers.yggdrasil]
command = "uvx"
args = ["yggdrasil-memory"]
env = { YGG_ENGINE_TOKEN = "<YGG_ENGINE_TOKEN>" }
# codex mcp add yggdrasil --env YGG_ENGINE_TOKEN='<YGG_ENGINE_TOKEN>' -- uvx yggdrasil-memory~/.cursor/mcp.json
{
"mcpServers": {
"yggdrasil": {
"command": "uvx",
"args": [
"yggdrasil-memory"
],
"env": {
"YGG_ENGINE_TOKEN": "<YGG_ENGINE_TOKEN>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"yggdrasil": {
"type": "stdio",
"command": "uvx",
"args": [
"yggdrasil-memory"
],
"env": {
"YGG_ENGINE_TOKEN": "<YGG_ENGINE_TOKEN>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"yggdrasil": {
"command": "uvx",
"args": [
"yggdrasil-memory"
],
"env": {
"YGG_ENGINE_TOKEN": "<YGG_ENGINE_TOKEN>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"yggdrasil": {
"command": "uvx",
"args": [
"yggdrasil-memory"
],
"env": {
"YGG_ENGINE_TOKEN": "<YGG_ENGINE_TOKEN>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"yggdrasil": {
"command": "uvx",
"args": [
"yggdrasil-memory"
],
"env": {
"YGG_ENGINE_TOKEN": "<YGG_ENGINE_TOKEN>"
}
}
}
}Environment variables
YGG_ENGINE_TOKEN
Replace the placeholders with your own credentials and keep them out of version control.