Is Bloom or Zscaler better for AI endpoint control?

Neither is scored on this site. Bloom describes 0 of four product control types and Zscaler 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?

Bloom: Partly. Zscaler: Not in our sources. Warn or ask: Bloom Not in our sources, Zscaler Not in our sources.

Do Bloom or Zscaler publish prices?

Bloom: Not published. Zscaler: Not published (demo request).

HEAD-TO-HEAD · FACTS ONLY

Bloom vs Zscaler: AI endpoint control facts side by side

Short answer

Bloom describes 0 of the four product control types on the pages we read and Zscaler describes 1; they differ on on-device control and network or SSE proxy. On decisions, Bloom describes some control over tool calls and Zscaler does not describe tool-call decisions on the pages we read. 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: Bloom
Dashed teal ring: Zscaler, 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?

Bloom Security and Zscaler Generative AI Security, from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Bloom	Zscaler
Owner	None	None
Positioning	An endpoint security company built around "Securing the AI-Native Endpoint": discovery of the software, extensions and AI tools running on devices, with policy enforcement across package and extension marketplaces. Offices in Wilmington, Delaware and Tel Aviv.	Zscaler's controls for employee use of generative AI: prompt-level visibility, allow or block by app, DLP blocking across GenAI apps, browser isolation that disables cut, paste and download, and data security for Microsoft Copilot.
How it reaches devices	Deployment method not published on the pages we read (re-checked 11 October 2026). Source: Bloom Security homepage · Read 27 Sep 2026	Delivered with Zscaler's cloud security service in the network path; endpoint agents are not described on the page we read. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026
On-device controlDiffers	Partly describedDiscovers software, extensions and AI on the endpoint and automatically scales back overpermissioned MCP servers; how it reaches the device is not published. Source: Bloom Security homepage · Read 27 Sep 2026	Not in our sourcesNot described on the pages we read.
Browser extension	Not in our sourcesNot described on the pages we read.	Not in our sourcesNot described on the pages we read.
Network or SSE proxyDiffers	Not in our sourcesNot described on the pages we read.	DescribedSee all input prompts users send to apps, allow or block apps, block sensitive data with DLP across GenAI, and isolate the browser to disable cut, paste and download. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026
AI or MCP gateway	Not in our sourcesNot described on the pages we read.	Not in our sourcesNot described on the pages we read.
Names the coding agents it covers	Not in our sources	Not in our sources
Decides on a tool call before it runsDiffers	PartlyAutomatically scales back overpermissioned MCP servers; decisions on individual calls are not described. Source: Bloom Security homepage · Read 27 Sep 2026	Not in our sources
Controls what goes into browser AIDiffers	Not in our sources	MatchesPrompt-level visibility, DLP blocking across GenAI apps, and browser isolation that disables cut, paste and download. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026
Rolls out through EDR or device management you run	Not in our sources	Not in our sources
Can warn or ask instead of only blocking	Not in our sources	Not in our sources
Can block an agent, tool or actionDiffers	PartlyEnforces policies across npm, Chrome Web Store and Open VSX. Source: Bloom Security homepage · Read 27 Sep 2026	MatchesAllow or block GenAI apps, and block sensitive data with DLP. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026
Has a watch-only or simulation mode	Not in our sources	Not in our sources
Records who or what took each action	Not in our sources	Not in our sources
Also covers SaaS, cloud or homegrown AIDiffers	Not in our sources	PartlyData security for Microsoft Copilot, including misconfigurations. Source: Zscaler: Secure the use of generative AI · Read 11 Oct 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	None in our sources	None in our sources
Price	Not published. Source: Bloom Security homepage · Read 27 Sep 2026	Not published (demo request). Source: Zscaler: Secure the use of generative AI · Read 11 Oct 2026

Where do they differ?

On-device control: Bloom partly describes it; Zscaler is not in our sources.
Network or SSE proxy: Bloom is not in our sources; Zscaler describes it.
Decides on a tool call before it runs: Bloom partly matches; Zscaler is not in our sources.
Controls what goes into browser AI: Bloom is not in our sources; Zscaler matches.
Can block an agent, tool or action: Bloom partly matches; Zscaler matches.
Also covers SaaS, cloud or homegrown AI: Bloom is not in our sources; Zscaler partly matches.

Choose Bloom if

Your first worry is unvetted extensions and packages arriving on developer machines
You want an inventory of everything on the endpoint before you write AI-specific rules

Choose Zscaler if

You already route traffic through Zscaler and want GenAI controls there
Your main risk is sensitive data pasted or uploaded into GenAI web apps

Which limits should you check?

Bloom

Deployment method and pricing are not published.
Decisions on individual tool calls and an activity record are not described on the pages we read.
Limited company information on its own pages: they do not name investors; funding is known from press coverage (Ctech, 30 July 2026).

Zscaler

Coding agents, MCP servers and local agent actions are not described on the page we read.
Warn or ask responses are not described, and no pricing is published.

Line up Bloom and Zscaler with others Run the finder