Is Koi or Sun better for AI endpoint control?

Neither is scored on this site. Koi describes 1 of four product control types and Sun 0 on the pages we read, and they differ on 7 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?

Koi: Partly. Sun: Matches. Warn or ask: Koi Not in our sources, Sun Not in our sources.

Do Koi or Sun publish prices?

Koi: Not published. Sun: Not published (demo request).

HEAD-TO-HEAD · FACTS ONLY

Koi vs Sun: AI endpoint control facts side by side

Short answer

Koi describes 1 of the four product control types on the pages we read and Sun describes 0; they differ on on-device control. On decisions, Koi describes some control over tool calls and Sun 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: Koi
Dashed teal ring: Sun, 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?

Koi (Palo Alto Networks) and Sun Security, from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Koi	Sun
Owner	Palo Alto Networks (acquisition completed 14 April 2026)	None
Positioning	Koi, now sold by Palo Alto Networks as Cortex Agentic Endpoint Security, gives visibility into models, MCPs and extensions on endpoints, removes insecure packages, extensions and AI tools in one click, and stops malicious actions.	AI agent security that says it sits in the path of every AI agent across workstations, cloud and SaaS, with three capabilities: discovery, posture management that learns each agent's purpose, and runtime checks of every tool call, connection and resource draw against that purpose before it executes.
How it reaches devices	Available as a Cortex XDR module or as a standalone agent. koi.ai now redirects to the Palo Alto Networks page. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	Not described; the site says you can get started in 5 minutes. Source: Sun Security homepage · Read 13 Oct 2026
On-device controlDiffers	DescribedAgent-based visibility into models, MCPs and extensions, one-click removal of insecure packages, extensions and AI tools, and blocking of unsafe AI application interactions. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	Partly describedCovers agents on workstations; the on-device method is not described. Source: Sun Security homepage · Read 13 Oct 2026
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 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	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 coversDiffers	MatchesA Palo Alto Networks blog of 18 August 2026 names Claude Code, Cursor, Codex and Antigravity. Source: Palo Alto Networks blog: A Quarter of Innovation with Koi Agentic Endpoint Security · Read 11 Oct 2026	PartlyNames Cursor and Claude Cowork; Claude Code, Codex and GitHub Copilot are not named. Source: Sun Security homepage · Read 13 Oct 2026
Decides on a tool call before it runsDiffers	PartlyBlocks unsafe AI application interactions and prevents prompt injections; decisions on individual tool calls are not described. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	MatchesEvery tool call, connection and resource draw is checked against the agent's purpose before it executes. Source: Sun Security homepage · Read 13 Oct 2026
Controls what goes into browser AI	Not in our sources	Not in our sources
Rolls out through EDR or device management you runDiffers	PartlyA Cortex XDR module, or its own standalone agent. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	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	MatchesStops malicious actions and removes insecure packages, extensions and AI tools in one click. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	PartlyIts demo shows a stopped action. Source: Sun Security homepage · Read 13 Oct 2026
Has a watch-only or simulation mode	Not in our sources	Not in our sources
Records who or what took each actionDiffers	Not in our sources	PartlyIts demo shows an action log. Source: Sun Security homepage · Read 13 Oct 2026
Also covers SaaS, cloud or homegrown AIDiffers	PartlyPalo Alto Networks plans integration with Prisma AIRS, its wider AI security platform. Source: Palo Alto Networks press release: acquisition of Koi completed · Read 27 Sep 2026	MatchesNames Copilot Studio and AWS Bedrock agents. Source: Sun Security homepage · Read 13 Oct 2026
Has a public price or tiers (vendor site or marketplace)	Not in our sources	Not in our sources
Built into	Offered as a Cortex XDR module. Source: Palo Alto Networks press release: acquisition of Koi completed · Read 27 Sep 2026	None
Works with	None in our sources	None in our sources
Price	Not published. Source: Palo Alto Networks: Cortex Agentic Endpoint Security · Read 27 Sep 2026	Not published (demo request). Source: Sun Security homepage · Read 13 Oct 2026

Where do they differ?

On-device control: Koi describes it; Sun partly describes it.
Names the coding agents it covers: Koi matches; Sun partly matches.
Decides on a tool call before it runs: Koi partly matches; Sun matches.
Rolls out through EDR or device management you run: Koi partly matches; Sun is not in our sources.
Can block an agent, tool or action: Koi matches; Sun partly matches.
Records who or what took each action: Koi is not in our sources; Sun partly matches.
Also covers SaaS, cloud or homegrown AI: Koi partly matches; Sun matches.

Choose Koi if

You already run Palo Alto Networks Cortex XDR
You want to find and remove risky extensions and packages across the fleet

Choose Sun if

You want each agent action checked against that agent's purpose

Which limits should you check?

Koi

Agent-based: it adds an agent unless you run it as a Cortex XDR module.
Warn or ask actions and a record that separates a person from an agent are not described on the pages we read, and no pricing is published.

Sun

Sun's site is a single marketing page, so most details are not described.
How it reaches devices is not described, and no price is published.

Line up Koi and Sun with others Run the finder