Open-source MCP server for scaffolding MERN stack CRUD resources with Express, Mongoose, React, and preview-safe code generation.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add mern --env MERN_MCP_PROJECT_ROOT='<MERN_MCP_PROJECT_ROOT>' -- npx -y mern-mcp~/.codex/config.toml
[mcp_servers.mern]
command = "npx"
args = ["-y", "mern-mcp"]
env = { MERN_MCP_PROJECT_ROOT = "<MERN_MCP_PROJECT_ROOT>" }
# codex mcp add mern --env MERN_MCP_PROJECT_ROOT='<MERN_MCP_PROJECT_ROOT>' -- npx -y mern-mcp~/.cursor/mcp.json
{
"mcpServers": {
"mern": {
"command": "npx",
"args": [
"-y",
"mern-mcp"
],
"env": {
"MERN_MCP_PROJECT_ROOT": "<MERN_MCP_PROJECT_ROOT>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"mern": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"mern-mcp"
],
"env": {
"MERN_MCP_PROJECT_ROOT": "<MERN_MCP_PROJECT_ROOT>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"mern": {
"command": "npx",
"args": [
"-y",
"mern-mcp"
],
"env": {
"MERN_MCP_PROJECT_ROOT": "<MERN_MCP_PROJECT_ROOT>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"mern": {
"command": "npx",
"args": [
"-y",
"mern-mcp"
],
"env": {
"MERN_MCP_PROJECT_ROOT": "<MERN_MCP_PROJECT_ROOT>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"mern": {
"command": "npx",
"args": [
"-y",
"mern-mcp"
],
"env": {
"MERN_MCP_PROJECT_ROOT": "<MERN_MCP_PROJECT_ROOT>"
}
}
}
}Environment variables
MERN_MCP_PROJECT_ROOT
Replace the placeholders with your own credentials and keep them out of version control.