Is Falcon Guardian or Prompt Security better for AI endpoint control?

Neither is scored on this site. Falcon Guardian describes 1 of four product control types and Prompt Security 2 on the pages we read, and they differ on 8 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?

Falcon Guardian: Matches. Prompt Security: Not in our sources. Warn or ask: Falcon Guardian Not in our sources, Prompt Security Not in our sources.

Do Falcon Guardian or Prompt Security publish prices?

Falcon Guardian: Not published. CrowdStrike's pricing page lists Falcon Go, Pro and Enterprise bundles, none of which include Falcon Guardian. Prompt Security: Not published.

HEAD-TO-HEAD · FACTS ONLY

Falcon Guardian vs Prompt Security: AI endpoint control facts side by side

Short answer

Falcon Guardian describes 1 of the four product control types on the pages we read and Prompt Security describes 2; they differ on browser extension and AI or MCP gateway. On decisions, Falcon Guardian decides on a tool call before it runs and Prompt Security 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: Falcon Guardian
Dashed teal ring: Prompt Security, 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?

CrowdStrike Falcon Guardian and Prompt Security (SentinelOne), from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Falcon Guardian	Prompt Security
Owner	None	SentinelOne (acquisition announced 5 August 2025; SentinelOne's blog of 3 September 2025 is titled SentinelOne Acquires Prompt Security)
Positioning	CrowdStrike's AI agent security product, described on 1 September 2026 as the evolution of Falcon AI Detection and Response (AIDR). It discovers shadow AI agents, connects agent activity to endpoint telemetry, governs which AI agents may run, protects prompts and sensitive data, and stops threats at runtime with containment, from endpoint to cloud and SaaS.	Prompt Security, now part of SentinelOne, inventories AI tools and code assistants, including unsanctioned shadow AI, through two local sensors, a browser extension and a dedicated AI endpoint agent, and is built into the SentinelOne Singularity Platform.
How it reaches devices	Through the Falcon sensor on supported Windows, macOS and Linux endpoints; Claude Code coverage is a JSON block in the Claude Code settings file with no agent to install, assigned through Falcon host groups. Source: CrowdStrike blog: Copilot Studio agents and Claude Code, 30 July 2026 · Read 13 Oct 2026	Two local sensors: a browser extension and a dedicated AI endpoint agent, managed from the SentinelOne Singularity Platform. Prompt Security argues that MDM or EDR integrations, which mostly run scripts periodically, are not enough. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026
On-device control	DescribedDiscovers AI agents on supported endpoints and ties prompts, skills, tool calls, MCP servers and identity to what runs next; defines which agent types may run. Source: CrowdStrike blog: Falcon Guardian, 1 September 2026 · Read 13 Oct 2026	DescribedA dedicated AI endpoint agent detects new AI agents, skills and connectors and applies runtime policies; it names GitHub Copilot, Cursor and Claude Code among the code assistants it inventories. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026
Browser extensionDiffers	Partly described(secondary: SACR) delivered also through browser extensions. Source: SACR (secondary): CISO guide to endpoint control and prevention, July 2026 · Read 13 Oct 2026 · secondary source	DescribedA browser extension inspects prompts, redacts sensitive data and discovers shadow AI. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026
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 gatewayDiffers	Partly describedThe AI gateway is listed as coming soon; SACR (secondary) also lists an MCP proxy. Source: CrowdStrike: Falcon Guardian (formerly AIDR) · Read 13 Oct 2026	Not in our sourcesNot described on the pages we read.
Names the coding agents it coversDiffers	PartlyNames Claude Code and Copilot Studio agents; Cursor, Codex and GitHub Copilot are not named on the pages we read. Source: CrowdStrike blog: Copilot Studio agents and Claude Code, 30 July 2026 · Read 13 Oct 2026	MatchesNames GitHub Copilot, Cursor and Claude Code. Source: SentinelOne: Prompt Security · Read 27 Sep 2026
Decides on a tool call before it runsDiffers	MatchesChecks and blocks Claude Code prompts and tool activity as they happen, and returns allow or block before a Copilot Studio agent runs a tool. Source: CrowdStrike blog: Copilot Studio agents and Claude Code, 30 July 2026 · Read 13 Oct 2026	Not in our sources
Controls what goes into browser AIDiffers	Not in our sources	MatchesThe browser extension inspects prompts and redacts sensitive data. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026
Rolls out through EDR or device management you runDiffers	MatchesThrough the Falcon sensor, if you run CrowdStrike Falcon. Source: CrowdStrike blog: Falcon Guardian, 1 September 2026 · Read 13 Oct 2026	PartlyIts own agent and extension, managed in the SentinelOne console; it does not ride on other EDR or MDM tools. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026
Can warn or ask instead of only blocking	Not in our sources	Not in our sources
Can block an agent, tool or actionDiffers	MatchesAutomatic containment by blocking malicious agent behaviors. Source: CrowdStrike blog: Falcon Guardian, 1 September 2026 · Read 13 Oct 2026	Not in our sources
Has a watch-only or simulation mode	Not in our sources	Not in our sources
Records who or what took each actionDiffers	MatchesClaude Code events tied to a session and user in Falcon Next-Gen SIEM. Source: CrowdStrike blog: Copilot Studio agents and Claude Code, 30 July 2026 · Read 13 Oct 2026	Not in our sources
Also covers SaaS, cloud or homegrown AI	MatchesCovers agents from endpoint to cloud and SaaS, including Copilot Studio. Source: CrowdStrike: Falcon Guardian (formerly AIDR) · Read 13 Oct 2026	MatchesCovers homegrown AI apps from testing to runtime. Source: SentinelOne: Prompt Security · Read 27 Sep 2026
Has a public price or tiers (vendor site or marketplace)	Not in our sources	Not in our sources
Built into	Part of the CrowdStrike Falcon platform. Source: CrowdStrike: Falcon Guardian (formerly AIDR) · Read 13 Oct 2026	Built into the SentinelOne Singularity Platform. Source: SentinelOne: Prompt Security · Read 27 Sep 2026
Works with	None in our sources	None in our sources
Price	Not published. CrowdStrike's pricing page lists Falcon Go, Pro and Enterprise bundles, none of which include Falcon Guardian. Source: CrowdStrike: pricing · Read 13 Oct 2026	Not published. Source: SentinelOne: Prompt Security · Read 27 Sep 2026

Where do they differ?

Browser extension: Falcon Guardian partly describes it; Prompt Security describes it.
AI or MCP gateway: Falcon Guardian partly describes it; Prompt Security is not in our sources.
Names the coding agents it covers: Falcon Guardian partly matches; Prompt Security matches.
Decides on a tool call before it runs: Falcon Guardian matches; Prompt Security is not in our sources.
Controls what goes into browser AI: Falcon Guardian is not in our sources; Prompt Security matches.
Rolls out through EDR or device management you run: Falcon Guardian matches; Prompt Security partly matches.
Can block an agent, tool or action: Falcon Guardian matches; Prompt Security is not in our sources.
Records who or what took each action: Falcon Guardian matches; Prompt Security is not in our sources.

Choose Falcon Guardian if

You already run CrowdStrike Falcon and want AI agent controls in the same console
Your agents include Copilot Studio as well as Claude Code

Choose Prompt Security if

You already run SentinelOne Singularity
You need an inventory of AI tools and coding assistants first

Which limits should you check?

Falcon Guardian

Needs CrowdStrike Falcon for the device path.
Claude Code is the only coding agent named on the pages we read.
The AI gateway is listed as coming soon, and no price is published.

Prompt Security

Two new local sensors to roll out, a browser extension and an endpoint agent, unless you already run SentinelOne.
Tool-call decisions, blocking, warning and activity records for agent actions are not described on the pages we read, and no pricing is published.

Line up Falcon Guardian and Prompt Security with others Run the finder