Asymptote Labs, a developer of runtime infrastructure for AI agents, has secured $5.5m in an oversubscribed seed round, betting that companies deploying autonomous agents at scale will soon need a single system of record to monitor and control them.

Tower Research Ventures, the venture arm of trading firm Tower Research Capital, led the investment. Lytical Ventures, 1984 Ventures and South Park Commons also took part. The startup plans to direct the capital towards engineering, product development, recruitment and its commercial push.

The raise comes as enterprises roll out growing numbers of AI agents across staff workstations, cloud environments and business processes.

These agents can reach sensitive data, alter code and trigger actions within critical systems, yet security and engineering teams often have little insight into how they behave or how to contain the risks they introduce.

Central to the company’s offering is Beacon, an open-source telemetry layer released under the MIT licence. It records agent activity across Claude Code, Codex, Cursor and over 20 further agent harnesses, converting that activity into a standard runtime data model built on top of the OpenTelemetry standard.

Organisations gain a consolidated view of every agent while retaining ownership of the underlying data. Developers also benefit, as insights from earlier coding sessions persist instead of being lost when a session closes.

Beacon’s adoption has accelerated quickly. Its GitHub stars rose by more than 460% during September, and the project climbed to third place on GitHub’s global trending repositories. Security teams are already running Beacon and the firm’s enterprise platform in live environments, with regulated enterprises among the earliest and most active users.

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