The following protective measures need to be implemented to ensure the security of the MCP server:
- voucher management: Change the X-N8N-API key for n8n periodically (monthly rotation is recommended), and the Supabase service key should be set with the least privilege principle
- encrypted transmission: Production environments must be configured with SSL certificates to enable HTTPS, avoiding the transmission of sensitive data in clear text.
- data isolation: Configure row-level security policies (RLS) for different tenants in Supabase to prevent unauthorized access to workflow configuration information
- Audit Monitoring: Record MCP router access logs and implement automatic blocking for abnormal call frequencies (e.g., more than 20 requests in 1 second).
Special Note: If the workflow contains third-party API calls, it is recommended to use n8n's Credential Safe function to store passwords; when integrating AI Assistant, IP whitelist restrictions should be set for the MCP server URL.
This answer comes from the articleN8N2MCP: automated tool to convert n8n workflows to MCP serversThe
May not be reproduced without permission:AI productivity tools " What are some security considerations to keep in mind when deploying workflows to an MCP server?
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