AgentLens is a self-hosted observability platform built specifically for AI agents. Unlike LangSmith (cloud-only) and Langfuse (LLM-focused),AgentLens understands agent topology — tool calls, handoffs, sub-agent spawns, and decision trees. 🔍 Agent Topology Graph ⏪ Time-Travel Replay 🔀 Trace Comparison 💰 Cost Tracking 🚨 Alerting 📡 Live Streaming 🔌 OTel Ingestion One-command deploy: docker run -p 3000:3000 tranhoangtu/agentlens-observe