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MCP-Bastion

io.github.vaquarkhan/mcp-bastion v3.1.2

Official Registry git security

Repository

Security middleware for MCP. Blocks prompt injection, PII leakage, and resource exhaustion.

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Install connect locally via stdio

Run in your terminal

claude mcp add mcp-bastion -- uvx mcp-bastion-python

Add to claude_desktop_config.json

{
  "mcpServers": {
    "mcp-bastion": {
      "command": "uvx",
      "args": [
        "mcp-bastion-python"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json

{
  "mcpServers": {
    "mcp-bastion": {
      "command": "uvx",
      "args": [
        "mcp-bastion-python"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "mcp-bastion": {
      "command": "uvx",
      "args": [
        "mcp-bastion-python"
      ]
    }
  }
}

Add to .vscode/mcp.json

{
  "servers": {
    "mcp-bastion": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-bastion-python"
      ]
    }
  }
}

Add to cline_mcp_settings.json

{
  "mcpServers": {
    "mcp-bastion": {
      "command": "uvx",
      "args": [
        "mcp-bastion-python"
      ]
    }
  }
}

Packages

pypi mcp-bastion-python@3.1.2

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