You feel faster with a coding agent. Feeling faster and being faster are not the same thing, and most teams cannot tell which one they are running. An agentic coding tool plans, calls tools and MCP servers, and edits your systems, and it emits all of it over OpenTelemetry. The production question is what that telemetry should tell you. Are your engineers more productive or just busier? Where does the spend go, and where does the agent stop earning it? What does good agent behavior look like for a given role, and what is the agent touching when no one is watching? This session works those questions through real agent telemetry: what an agent like Claude Code exposes over the OTel GenAI semantic conventions, which signals matter for productivity, cost, and security, and how much to keep before you are paying to store noise. Two organizations share what they collect on their own engineers and what they act on, then a live demo runs the same agent telemetry through an open CNCF stack, OpenTelemetry into Prometheus, Loki, Jaeger, and Grafana, and a commercial backend side by side, so you can decide what to operate yourself.