BreachLine is a comprehensive security testing platform that utilizes Nebula, an AI-powered security engineer, to assist teams in various stages of security assessments, including scoping, planning, executing tests, identifying vulnerabilities, analyzing findings, providing remediation advice, generating reports, and conducting follow-up tests. The platform is versatile, enabling testing across multiple environments such as web applications, APIs, mobile applications, cloud infrastructures, networks, and AI systems, and features collaborative workspaces, scheduled tasks, and seamless integrations with communication and issue-tracking platforms. Users can engage with the service through a credit-based system, which includes monthly subscription plans and an enterprise per-seat pricing option. Additionally, BreachLine provides a distinct suite of 16 complimentary browser security tools that require no sign-up, allowing users to assess dependencies, compare lockfiles and SBOMs, and evaluate CI workflows and application settings. The tools perform deterministic checks directly in the browser, while hosted MCP reviews analyze submitted content on BreachLine's servers. This dual approach ensures both immediate and thorough security evaluations for users.