HEAD-TO-HEAD · FACTS ONLY
Koi vs Noma: AI endpoint control facts side by side
Short answer
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: Noma, 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)
What are the facts, side by side?
| Fact | Koi | Noma |
|---|---|---|
| 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. | An AI security platform with AI-SPM, Agent Access Control, AI detection and response and AI red teaming, covering agents on endpoints, in SaaS and in homegrown apps. |
| 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 | Discovers endpoint agents through your existing EDR or MDM, with no new endpoint agent to deploy. Source: Noma Security: endpoint agents · Read 27 Sep 2026 |
| On-device control | 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 | DescribedDiscovers endpoint agents such as Claude Code, Cursor and Codex with their MCP servers and skills, blocks unauthorized and malicious ones, and inspects activity at runtime. Source: Noma Security: endpoint agents · Read 27 Sep 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 covers | 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 | MatchesNames Claude Code, Cursor and Codex. Source: Noma Security: endpoint agents · Read 27 Sep 2026 |
| Decides on a tool call before it runs | 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 | PartlyRuntime inspection of the event, the session, the identity behind the agent and the data it reaches; decisions on individual tool calls are described less specifically. Source: Noma Security: endpoint agents · Read 27 Sep 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 | MatchesThrough your existing EDR or MDM, with no new endpoint agent. Source: Noma Security: endpoint agents · Read 27 Sep 2026 |
| Can warn or ask instead of only blockingDiffers | Not in our sources | PartlyStates that runtime decisions can route to a human. Source: Noma Security: endpoint agents (re-read) · Read 13 Oct 2026 |
| Can block an agent, tool or action | 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 | MatchesBlocks unauthorized and malicious agents. Source: Noma Security: endpoint agents · Read 27 Sep 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 | PartlyKeeps a live registry of allowed agents, MCP servers and skills and inspects the identity behind each agent. Source: Noma Security: endpoint agents · Read 27 Sep 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 | MatchesCovers endpoint, SaaS and homegrown agents. Source: Noma Security homepage · Read 27 Sep 2026 |
| Has a public price or tiers (vendor site or marketplace)Differs | Not in our sources | MatchesAWS Marketplace lists the Noma Security Platform at $200,000 for a 12-month contract (marketplace list price); noma.security has no pricing page. Source: AWS Marketplace: Noma Security Platform · Read 11 Oct 2026 |
| 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 | Marketplace list price: $200,000 for a 12-month contract on AWS Marketplace. No pricing page on noma.security. Source: AWS Marketplace: Noma Security Platform · Read 11 Oct 2026 |
Where do they differ?
- Rolls out through EDR or device management you run: Koi partly matches; Noma matches.
- Can warn or ask instead of only blocking: Koi is not in our sources; Noma partly matches.
- Records who or what took each action: Koi is not in our sources; Noma partly matches.
- Also covers SaaS, cloud or homegrown AI: Koi partly matches; Noma matches.
- Has a public price or tiers (vendor site or marketplace): Koi is not in our sources; Noma 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 Noma if
- Agents run on laptops, in SaaS and in apps you build, and you want one place to see them
- You want discovery through existing EDR or MDM without a new agent
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.
Noma
- A watch-only or simulation mode is not described on the pages we read.
- Decisions on individual tool calls are described less specifically than discovery, and the only public price is a $200,000 a year marketplace listing.