sipnab is a free AI-powered security tool designed for analyzing SIP calls and diagnosing issues within VoIP communications. It can read SIP calls from live traffic, pcap files, or HEP feeds, providing insights into call flows and RTP quality. The application features a terminal user interface (TUI) that allows users to interactively monitor calls, view detailed reports, and filter problematic calls based on various criteria. Additionally, sipnab offers multiple output modes, including JSON and MCP server capabilities, making it adaptable for integration with AI agents.

The program excels in SIP header matching, RTP monitoring, and security analysis, identifying issues like registration floods and codec asymmetries. It supports advanced features such as TLS/SRTP decryption, HEP v3, and SIPREC metadata reading. With a focus on usability, sipnab includes a variety of diagnostic aliases and commands for real-time event execution, allowing users to respond effectively to call quality issues. Comprehensive documentation is available to assist users in leveraging its features fully.