Asymptote Labs raises $5.5M seed to monitor enterprise AI agents

Asymptote Labs has closed an oversubscribed $5.5 million seed round led by Tower Research Ventures, with Lytical Ventures, 1984 Ventures and South Park Commons participating. The startup pairs its open-source Beacon telemetry layer with an enterprise platform for detecting, blocking and governing AI agent actions.

• $5.5M seed round led by Tower Research Ventures
• Beacon records activity from Claude Code, Codex, Cursor and 20+ harnesses
• Platform enforces prompt- and tool-level policies on live agents
• Beacon is MIT-licensed and grew GitHub stars over 460% in September