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io.github.MCPShield-Dev/mcpshield
Security scanner for MCP servers - detects tool poisoning and injection
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MCPShield CLI
Scan MCP servers and GitHub repositories for security vulnerabilities.
Powered by MCPShield β the MCP security scanner with 59+ detection rules covering the OWASP MCP Top 10.
Install
npm install -g mcpshield
Setup
Get a free API key at mcpshield.co/settings, then:
mcpshield auth mcp_sk_your_key_here
Usage
# Scan an HTTP MCP server
mcpshield scan --url https://mcp-server.example.com/mcp
# Scan a GitHub repository
mcpshield scan --github https://github.com/user/repo
# JSON output (for CI/CD)
mcpshield scan --url https://mcp-server.example.com/mcp --json
# Filter by severity
mcpshield scan --url https://mcp-server.example.com/mcp --severity high
Exit Codes
0β Scan completed, no critical findings1β Error (invalid key, rate limit, scan failure)2β Scan completed with critical findings
Environment Variables
MCPSHIELD_API_KEYβ API key (alternative tomcpshield auth)MCPSHIELD_API_URLβ Custom API endpoint (for self-hosted)
License
MIT
