Density AI Agent Flight Recorder: Storage-Optimized Observability for Agent Traces
Density is an open-source flight recorder for AI agents that solves the growing problem of agent trace storage bloat. Instead of deleting traces to save space, Density compresses them into a tiered storage system — HOT, WARM, and COLD — with verifiable recall guarantees at each tier. It achieves up to 50.6x compression on traces and 32x on embeddings while maintaining recall above 0.99, making it the first storage-layer observability tool that lets you keep everything without guessing what you will lose. ...