Bay

Bay is an AI agent security platform for enterprise security teams. It finds the AI agents, MCP servers, plugins and skills running on laptops, browsers and cloud workspaces, then decides in milliseconds whether each agent action is allowed, blocked or sent to a human for approval.

Bay is an Israeli security startup that came out of stealth on November 10, 2026 with $50 million: a $37 million Series A led by Battery Ventures, with Micron Ventures, Microsoft's M12 and Wiz CEO Assaf Rappaport, plus a previously unannounced $13 million seed led by YL Ventures and Striker Venture Partners. Its co-founders are CEO Yuval Zacharia, previously head of research and AI at Hunters after leading a department in Israel's Unit 8200; CPO Aner Morag, formerly VP of product at Noname Security; and VP of R&D Boris Danilovich, who led engineering teams at CrowdStrike. The product is split into Endpoint, Cloud Workspace and Browser modules. Bay discovers every agent, MCP server, plugin and skill in use and shows what each can reach and who uses it. It flags posture risks such as toxic tool combinations, exposed credentials and disabled sandboxes. At runtime it evaluates each proposed action against the whole session and returns allow, ask or deny. It learns per-company agent behaviour, so security teams do not have to write rules for every new tool. Deployment is agentless through existing EDR or MDM infrastructure, with no kernel driver or network proxy, and Bay claims visibility within five minutes. It holds SOC 2 and ISO 27001. Customer logos include Micron, Peloton, ClickUp, Wix and The Motley Fool. Competitors include Zenity, Straiker, NeuralTrust and Asymptote Labs.

Category

Governance & Security

Pricing

Contact for pricing

Target Market

CISOs, Security Engineering, CIOs, IT Leaders

Deployment

Cloud-first

Headquarters

Tel Aviv, Israel

Team Size

11-50

Customers

Dozens of enterprise customers (company claim, Nov 2026)

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  Shadow AI discovery

  Inventories every AI agent, MCP server, plugin and skill across the organisation, showing what each can access and who uses it.

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  AI security posture

  Checks agent configuration for toxic tool combinations, exposed credentials and disabled sandboxes, with automated remediation of the findings.

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  Agent runtime enforcement

  Evaluates each proposed agent action against the full session and allows, blocks or routes it to a human in milliseconds.

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  Adaptive guardrails

  Learns each company's agent behaviour and applies different policies per user group, such as developers versus finance, without hand-written rules.

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  Agent investigation and forensics

  Keeps an audit trail of agent actions so security teams can reconstruct what an agent did during an incident.

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  Agentless deployment

  Rolls out through existing EDR or MDM tooling with no kernel driver or proxy, which Bay says gives visibility within five minutes.

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  Inventory of AI tools in use

  A security team switches Bay on and gets a map of every agent and MCP server running across laptops and browsers within minutes.

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  Blocking destructive agent actions

  When a coding agent tries a risky command or data access, Bay blocks it or asks the user to approve before it executes.

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  Scaling sanctioned agent use

  With guardrails in place, IT can approve broader agent rollouts instead of banning tools, which Bay says customers used to expand agent use.

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  AI governance reporting

  Compliance teams pull governance reports and agent activity logs to show auditors how autonomous AI use is controlled across the company.

Bay publishes no list pricing as of November 12, 2026; the site offers only a demo request. The metering unit (per device, per user or per agent) and which modules are bundled are not disclosed, so buyers should ask how Endpoint, Cloud Workspace and Browser are priced separately.

This page was written from 5 sources, 2 on domains other than bay.io.

1. 1.bay.io — bay.iovendor
2. 2.bay.io — aboutvendor
3. 3.bay.io — introducing bay the ai agent security platform out of stealtvendor
4. 4.thenextweb.com — bay 50m ai agent security stealth battery ventures
5. 5.cybersectools.com — bay security