How do I scan my own MCP server?

Run pip install spidershield && spidershield scan ./your-server to get a local security rating for any MCP server. SpiderShield is the open-source scanner (MIT license) that powers SpiderRating. The scan runs entirely on your machine — no code or data leaves your environment. Results include the SpiderScore, letter grade, detailed issue breakdown, and suggestions for remediation. You can also scan by URL: spidershield scan https://github.com/owner/repo. Get started at github.com/teehooai/spidershield.