mcplint

MCPLint is a security tool designed to test other MCP servers. It robustly handles interactions with external processes (the target MCP servers) by using Rust's `std::process::Command` with arguments passed as separate strings, which safely prevents shell injection vulnerabilities within MCPLint itself. API keys for external AI providers (OpenAI, Anthropic) are loaded from environment variables and explicitly not hardcoded. Responses from AI models are sanitized and gracefully handled, including fallbacks for malformed JSON, to mitigate risks from AI hallucination or unexpected output. The codebase demonstrates careful consideration for security best practices given its domain, including detailed error handling and support for secure CI/CD integrations like SARIF. While it orchestrates potentially dangerous operations (like fuzzing unknown servers), these are performed against external targets, and MCPLint itself appears designed with strong internal security.