~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.json~/.config/Claude/claude_desktop_config.json{
"mcpServers": {
"chart-output": {
"command": "npx",
"args": [
"@chartoutput/mcp"
],
"env": {
"CHART_OUTPUT_API_KEY": "pk_test_YOUR_KEY"
}
}
}
}