Asymptote Labs lands $5.5M seed as its lead investor's security team tries Beacon

Asymptote Labs, a New York startup building a shared record of AI agent activity with enterprise controls layered on top, has raised a $5.5M Seed round led by Tower Research Ventures.

The round, announced October 20, 2026, drew participation from Lytical Ventures, 1984 Ventures and South Park Commons. The financing supports engineering, product development, hiring and go-to-market, according to the company's announcement.

What separates this announcement from a standard infrastructure raise is who is doing the buying — or at least the looking. Tower Research Ventures is the venture arm of Tower Research Capital, and the trading firm's own security organization is separately evaluating Beacon on its endpoints. The two relationships are distinct: one finances Asymptote, the other explores how the product behaves in an operating environment. The announcement does not establish Tower as a paying enterprise customer, nor does it disclose the outcome of that evaluation.

At the center of the business is Agent Beacon, an open-source foundation whose repository describes a shared event model for prompts, responses, commands, file activity, approvals and other session details across agent harnesses. For engineering organizations whose staff move among assistants with different interfaces and conventions, a normalized record means history survives the end of a session — and a security analyst can start an investigation with the work itself rather than first determining which tool holds the evidence.

Beacon's repository also describes turning session history into reusable knowledge, with lessons extracted, reviewed and made available to future agents through MCP or Agent Skills. The commercial layer sits above that: Asymptote's pricing and deployment comparison separates free Community collection from a custom-priced Enterprise service and Private Deployment, adding managed ingestion, retention, search and analytics alongside identity, policy, approvals and governance.

Deployment detail is worth flagging for prospective buyers. The README explains that interactive setup preselects Beacon Cloud with a local opt-out, while other installation paths behave differently — a reminder that prompts and traces can contain material an organization also needs to govern.

Co-founders Justin D'Souza, CEO, and Shukan Shah, CTO, bring experience from threat identification work at Doppel. Asymptote's team page describes D'Souza's background in machine-learning infrastructure and Shah's in security operations automation, alongside earlier payments work — a combination that matters for a product required both to interpret what happened and hand that information to another team.