Perplexity AI released Numbat as open source under Apache 2.0 and contributed it to the Open Secure AI Alliance. The single Go binary supplies local detection of AI agent actions, optional pre-action blocking, and forensic reconstruction of events. It runs across developer fleets and AI coding agents on macOS, Linux, and Windows to gather audit events, findings, and telemetry. NVIDIA AI publicly acknowledged the contribution. The project focuses on visibility into agent behavior rather than broad system monitoring.