Superagent

Superagent is a Y Combinator-backed software security platform that helps teams build an autonomous security factory for applications, repositories, infrastructure, and AI agents. Its security workers operate around the clock and are designed to handle specific jobs end to end, while connecting with the tools and workflows customers already use. The platform offers pull request security to stop risky code and untrusted contributors before they merge, secure dependency updates that turn vulnerable packages into tested, merge-ready pull requests, and red-team runs to identify potential exploit paths. Context and runtime guardrails help protect agents from phishing, prompt injection, sensitive-data leaks, and policy violations.

Superagent integrates with tools including GitHub, Cursor, Claude Code, and Codex, and supports workflows involving platforms such as Resend and Devin. Teams can use predefined security workers or build their own to meet specific needs. The company says its self-learning system improves with each run and is used by more than 3,000 open-source projects on GitHub.