MCP server for persistent semantic memory. 10 tools: remember, recall, connect, awaken, hibernate, Intelligence Packs. Works with Claude Code, Cursor, Windsurf.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add nexus-memory --env NEXUS_API_KEY='<NEXUS_API_KEY>' -- npx -y nexus-memory-mcp~/.codex/config.toml
[mcp_servers.nexus-memory]
command = "npx"
args = ["-y", "nexus-memory-mcp"]
env = { NEXUS_API_KEY = "<NEXUS_API_KEY>" }
# codex mcp add nexus-memory --env NEXUS_API_KEY='<NEXUS_API_KEY>' -- npx -y nexus-memory-mcp~/.cursor/mcp.json
{
"mcpServers": {
"nexus-memory": {
"command": "npx",
"args": [
"-y",
"nexus-memory-mcp"
],
"env": {
"NEXUS_API_KEY": "<NEXUS_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"nexus-memory": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"nexus-memory-mcp"
],
"env": {
"NEXUS_API_KEY": "<NEXUS_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"nexus-memory": {
"command": "npx",
"args": [
"-y",
"nexus-memory-mcp"
],
"env": {
"NEXUS_API_KEY": "<NEXUS_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"nexus-memory": {
"command": "npx",
"args": [
"-y",
"nexus-memory-mcp"
],
"env": {
"NEXUS_API_KEY": "<NEXUS_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"nexus-memory": {
"command": "npx",
"args": [
"-y",
"nexus-memory-mcp"
],
"env": {
"NEXUS_API_KEY": "<NEXUS_API_KEY>"
}
}
}
}Environment variables
NEXUS_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.