Asymptote Labs raises $5.5M seed to monitor and control AI agent actions

New York startup Asymptote Labs announced on Tuesday that it has closed a $5.5 million seed funding round. Tower Research Ventures, the venture capital arm of trading firm Tower Research Capital, led the investment. The company said the capital will be used to expand its engineering team, hire new staff, and grow its sales operations.

Other participants in the round included Lytical Ventures, 1984 Ventures, and South Park Commons. Asymptote Labs did not disclose its valuation. The startup focuses on monitoring artificial intelligence agents within corporate environments, providing visibility into their operations. This funding supports the development of tools designed to track and control these automated systems as they become more prevalent in enterprise workflows.

Product and Market Context

Asymptote’s primary offering is Beacon, a free, open-source utility that records the activities of AI agents. The tool supports coding agents such as Claude Code, Codex, and Cursor, along with more than twenty other platforms. Beacon consolidates agent activity, including prompts, commands, and file edits, into a single standard format. This allows security teams to view the actions of different agents and identify on whose behalf those actions were taken.

The company’s paid platform builds upon the foundational data collected by Beacon. According to Asymptote, this commercial solution can block risky actions, such as potential data leaks, before they occur. Justin D’Souza, co-founder and chief executive, stated that AI agents are becoming a new operating layer inside companies, but the infrastructure to understand and control them has not yet caught up.

Founders and Adoption

Co-founders Justin D’Souza and Shukan Shah previously worked as engineers at Doppel, a startup focused on combating social engineering attacks. Beacon launched in May, and the company reported significant growth in its open-source community presence. Asymptote said its GitHub page increased its star count by more than 460 percent in September.

Security teams are already using Asymptote’s tools in production environments, though the company did not name specific customers. Tower Research Capital’s own security team is currently testing Beacon on its computers. The investment reflects broader market interest in agent monitoring, with Straiker raising $64 million in June for similar purposes. Recent research also highlighted risks, with claims that a single prompt could compromise agents on Amazon’s AgentCore, a finding disputed by AWS.

What should you do?

Organizations using AI agents should assess their current visibility into agent activities. Security teams can evaluate open-source tools like Beacon to standardize logging of prompts and file edits. Companies should also review their paid platform options for blocking risky actions before deployment. Monitoring agent behavior is critical as these tools integrate deeper into operational workflows.

Background: Social engineering

Look for urgency, secrecy, and deviation from standard channels. Verify identity through a separate, known communication path before acting. Isolate suspicious interactions immediately to prevent lateral movement within your network environment.

Read the full guide: Social Engineering Warning Signs and How to Respond

What to do and how to stay safe: Asymptote Labs

• Audit current AI agent usage to determine what data is being accessed or modified by automated systems.
• Implement logging tools that capture prompts, commands, and file edits in a standardized format for security review.
• Evaluate paid platforms that offer proactive blocking capabilities for risky actions such as unauthorized data transfers.
• Monitor industry developments and security research regarding AI agent vulnerabilities and potential exploitation methods.

Step-by-step guide: Prompt Injection Warning Signs: How to Spot AI Manipulation

General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

Who led the seed funding round for Asymptote Labs?

Tower Research Ventures, the venture arm of trading firm Tower Research Capital, led the $5.5 million seed round.

What does the Beacon tool do?

Beacon is a free, open-source tool that records AI agent activities, including prompts, commands, and file edits, in a standard format.

How much did Asymptote Labs raise?

Asymptote Labs raised $5.5 million in seed funding.