A wave of funding just landed on agent supervision, and the practical question for anyone running infrastructure is what the tooling does that existing monitoring and access control do not. Three capabilities are genuinely new. The rest is repositioning. Action chain tracing Traditional application monitoring records requests, latencies, errors, and traces across services. An agent produces a different shape of telemetry: a sequence of tool calls, each individually valid, chosen at runtime by a model whose reasoning is not in the log.

Three rounds closed in a single session, all funding the same problem from different angles. Onyx Security raised a $113 million Series B led by Bessemer for a platform that lets enterprises deploy AI agents securely, taking total funding to $153 million. Groundcover raised a $100 million Series C led by One Peak for observability software capable of monitoring AI agents, bringing its total to $160 million. Spur Intelligence raised $200 million led by Insight Partners for technology that distinguishes human from bot traffic to identify fake users and threats.