Is Onyx or Zenity better for AI endpoint control?

Neither is scored on this site. Onyx describes 3 of four product control types and Zenity 1 on the pages we read, and they differ on 6 recorded facts. Which fits depends on the AI tools people use, your devices, where the work happens and whether you block or guide; the finder checks those.

Which of the two decides on a tool call before it runs?

Onyx: Matches. Zenity: Matches. Warn or ask: Onyx Matches, Zenity Partly.

Do Onyx or Zenity publish prices?

Onyx: Not published. Zenity: Not published.

HEAD-TO-HEAD · FACTS ONLY

Onyx vs Zenity: AI endpoint control facts side by side

Short answer

Onyx describes 3 of the four product control types on the pages we read and Zenity describes 1; they differ on on-device control and browser extension. On decisions, Onyx decides on a tool call before it runs and Zenity decides on a tool call before it runs. We do not score either; the right choice depends on the AI tools people use, your devices, your current stack and whether you block or guide.

By The Device Desk · Endpoint AI Finder · Published 2026-10-11

Desk research from public vendor pages read on 27 September and 11 October 2026. Profiles follow our published method; we did not run the products.

Vendor pages read September and October 2026 · updated 2026-10-13

Where do their controls sit?

Filled or hatched marker: Onyx
Dashed teal ring: Zenity, described

DEV Filled marker: described on the product pages we read
DEV Hatched marker: partly described (another component, a narrower scope, or method not detailed)
DEV Dashed marker: not in our sources (it may exist; we did not find it)

The map shows where each product's own pages describe a control, or where your answers point. It is not a measure of how well a product works.

What are the facts, side by side?

Onyx Security and Zenity, from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Onyx	Zenity
Owner	None	None
Positioning	"The Secure AI Control Plane for the Agentic Era": inline inspection of prompts, tool calls and model responses across browser AI, coding assistants, desktop AI agents, cloud workloads and MCP servers. Based in Tel Aviv and New York.	An AI agent security platform covering AI observability, posture management, exposure management, runtime boundaries, agentic identity, MCP security and AI detection and response, with a long list of SaaS and cloud agent integrations.
How it reaches devices	Endpoint agents, browser extensions, APIs and gateways. Source: Onyx Security: AI security platform · Read 27 Sep 2026	Native agent hooks and the Zenity MCP gateway for coding agents; how it reaches endpoints is not detailed. Source: Zenity: coding and personal agents · Read 27 Sep 2026
On-device controlDiffers	DescribedEndpoint agents cover coding assistants and desktop AI agents. Source: Onyx Security: AI security platform · Read 27 Sep 2026	Partly describedBlocks or modifies a dangerous tool call before it executes through native agent hooks; how it reaches endpoints is not detailed. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Browser extensionDiffers	DescribedBrowser extensions cover browser AI. Source: Onyx Security: AI security platform · Read 27 Sep 2026	Not in our sourcesNot described on the pages we read.
Network or SSE proxy	Not in our sourcesNot described on the pages we read.	Not in our sourcesNot described on the pages we read.
AI or MCP gateway	DescribedGateways and APIs inspect traffic inline. Source: Onyx Security: AI security platform · Read 27 Sep 2026	DescribedThe Zenity MCP gateway can block or modify a tool call before it executes. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Names the coding agents it coversDiffers	PartlyCovers coding assistants; specific tools are not named on the pages we read. Source: Onyx Security: AI security platform · Read 27 Sep 2026	MatchesNames Claude Code and Cowork, ChatGPT Codex, GitHub Copilot and Cursor. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Decides on a tool call before it runs	MatchesInspects every prompt, tool call and model response inline. Source: Onyx Security: AI security platform · Read 27 Sep 2026	MatchesBlocks or modifies a dangerous tool call before it executes. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Controls what goes into browser AIDiffers	MatchesCan mask data in browser AI as well as block it. Source: Onyx Security: AI security platform · Read 27 Sep 2026	Not in our sources
Rolls out through EDR or device management you run	Not in our sources	Not in our sources
Can warn or ask instead of only blockingDiffers	MatchesFive actions: alert, block, mask, steer or ask. Source: Onyx Security: AI security platform · Read 27 Sep 2026	PartlyCan modify a tool call as well as block it; asking the user is not described. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Can block an agent, tool or action	MatchesBlock is one of five actions. Source: Onyx Security: AI security platform · Read 27 Sep 2026	MatchesBlocks a dangerous tool call before it executes. Source: Zenity: coding and personal agents · Read 27 Sep 2026
Has a watch-only or simulation modeDiffers	PartlyAlert is one of five actions; a simulation mode is not described. Source: Onyx Security: AI security platform · Read 27 Sep 2026	Not in our sources
Records who or what took each action	PartlyIntegrates with Okta, Entra and Splunk; separating a person from an agent is not described. Source: Onyx Security: AI security platform · Read 27 Sep 2026	PartlyAI observability and agentic identity and access management are named capabilities. Source: Zenity platform · Read 27 Sep 2026
Also covers SaaS, cloud or homegrown AI	MatchesCloud workloads and MCP servers as well as devices. Source: Onyx Security: AI security platform · Read 27 Sep 2026	MatchesIntegrations include Bedrock, Azure AI Foundry, ChatGPT Enterprise, Claude Enterprise, Copilot Studio, Vertex AI, Microsoft 365 Copilot, Power Platform, Salesforce, Agentforce and ServiceNow. Source: Zenity platform · Read 27 Sep 2026
Has a public price or tiers (vendor site or marketplace)	Not in our sources	Not in our sources
Built into	None	None
Works with	Lists CrowdStrike among its integrations. Source: Onyx Security: AI security platform · Read 27 Sep 2026	None in our sources
Price	Not published. Source: Onyx Security homepage · Read 27 Sep 2026	Not published. Source: Zenity homepage · Read 27 Sep 2026

Where do they differ?

On-device control: Onyx describes it; Zenity partly describes it.
Browser extension: Onyx describes it; Zenity is not in our sources.
Names the coding agents it covers: Onyx partly matches; Zenity matches.
Controls what goes into browser AI: Onyx matches; Zenity is not in our sources.
Can warn or ask instead of only blocking: Onyx matches; Zenity partly matches.
Has a watch-only or simulation mode: Onyx partly matches; Zenity is not in our sources.

Choose Onyx if

You want masking or steering rather than only allow or block
AI use spans the browser, desktop apps, coding tools and cloud workloads

Choose Zenity if

Microsoft 365 Copilot, Copilot Studio, Salesforce or ServiceNow agents matter as much as laptops
You want an MCP gateway that can modify a tool call, not only block it

Which limits should you check?

Onyx

Uses its own endpoint agents and browser extensions, so there is something new to roll out to devices.
No pricing published, and specific coding agents are not named on the pages we read.

Zenity

How it reaches endpoints is not detailed on the pages we read.
No pricing published, and asking the user before an action is not described.

Line up Onyx and Zenity with others Run the finder