Shannon is an AI pentester for web applications and APIs that analyzes source code, identifies attack vectors, and executes real exploits to prove vulnerabilities before they reach production.
Shannon addresses the security gap created by infrequent penetration testing cycles. It combines source-code analysis with live exploitation through browser automation and command-line tools to identify potential attack paths and execute working proofs-of-concept. The tool only reports vulnerabilities where exploitation succeeds, ensuring findings are actionable rather than theoretical.
Shannon Open Source is the standalone version you run locally from the command line, distinct from the commercial Keygraph platform that uses the same underlying agent. The tool suits teams shipping code frequently who need on-demand security testing integrated into their development workflow rather than relying on annual penetration tests. It works against running web applications and their APIs, making it applicable to both traditional web apps and API-first architectures.
The maintainers respond to new issues and pull requests within a day, indicating active engagement with the user base.
