Local guardrail proxy that blocks destructive MCP tool calls, rug pulls, and tool poisoning
Install
Run one of the commands below, then add the client config underneath.
docker run -i --rm ghcr.io/aperionai/shield:shield-v1.0.1About this server
Aperion Shield is listed in the Developer Tools category of the MCPNav directory. It is distributed as Docker and can be loaded by any client that speaks the Model Context Protocol.
Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.
Frequently asked questions
What is the Aperion Shield MCP server?＋
Aperion Shield is an MCP server by AperionAI. Local guardrail proxy that blocks destructive MCP tool calls, rug pulls, and tool poisoning
How do I install Aperion Shield?＋
Install it with: docker run -i --rm ghcr.io/aperionai/shield:shield-v1.0.1. Then add the JSON config to your client's MCP settings and restart the client.
Is Aperion Shield free to use?＋
The MCP server itself is free to install. The source is public on https://github.com/AperionAI/shield. Any third-party API it calls (such as a search or maps API) may require its own key and billing.
Which clients support Aperion Shield?＋
Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.