MCP Defender scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code, and Windsurf. It provides real-time monitoring and filtering of MCP messages. It connects to AI apps via their MCP interfaces. Developers use it to secure AI app communication from malicious attacks.
MCP Defender scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code, and Windsurf. It provides real-time monitoring and filtering of MCP messages. It connects to AI apps via their MCP interfaces. Developers use it to secure AI app communication from malicious attacks.
npx -y mcp-defenderAdd this configuration to your claude_desktop_config.json:
{
"mcpServers": {
"mcp-defender-mcp-defender-github": {
"command": "npx",
"args": [
"-y",
"npx -y mcp-defender"
]
}
}
}Restart Claude Desktop, then ask:
"What tools do you have available from MCP Defender?"
No configuration required. This server works out of the box.
"What resources are available in MCP Defender?"
Claude will query available resources and return a list of what you can access.
"Show me details about [specific item] in MCP Defender"
Claude will fetch and display detailed information about the requested item.
"Create a new [item] in MCP Defender with [details]"
Claude will use the appropriate tool to create the resource and confirm success.
We build custom MCP integrations for B2B companies. From simple connections to complex multi-tool setups.