Head to head · Checked against vendor sites, September 2026
Noma Security vs Onyx Security: AI agent security compared
The verdict
Noma Security scores higher overall on our weights (7.5 vs 7.4 out of 10). Noma Security scores higher on visibility and footprint; Onyx Security scores higher on tool-call control and policy. They tie on identity and audit, maturity and breadth. Neither publishes list prices.
How do Noma Security and Onyx Security compare on each criterion?
| Criterion | Weight | Noma Security | Onyx Security | Edge |
|---|---|---|---|---|
| Visibility | 22% | 8 | 7 | Noma Security |
Why these scoresNoma Security: Discovers endpoint agents such as Claude Code, Cursor and Codex with their MCP servers and skills. Onyx Security: Discovers AI agents across SaaS, cloud, endpoint and code; endpoint inventory detail is lighter than endpoint-first tools. | ||||
| Tool-call control | 20% | 7 | 8 | Onyx Security |
Why these scoresNoma Security: Blocks unauthorized and malicious agents and stops risky behavior at runtime; per-tool-call mechanics are described less specifically. Onyx Security: Inspects every prompt, tool call and model response inline. | ||||
| Policy | 15% | 7 | 8 | Onyx Security |
Why these scoresNoma Security: Runtime inspection across the event, the session, the identity behind the agent and the data it reaches; action types beyond block not detailed. Onyx Security: Five enforcement actions: alert, block, mask, steer, or ask a human. | ||||
| Identity and audit | 12% | 7 | 7 | Tie |
Why these scoresNoma Security: Keeps a live registry of allowed agents, MCP servers and skills and inspects the identity behind each agent. Onyx Security: Agent identity and access governance is a named solution. | ||||
| Footprint | 13% | 8 | 6 | Noma Security |
Why these scoresNoma Security: Discovers endpoint agents through existing EDR or MDM with no new endpoint agent to deploy. Onyx Security: Works across endpoint agents, browser extensions, APIs and gateways; the endpoint component is a resident agent or extension. | ||||
| Breadth | 8% | 9 | 9 | Tie |
Why these scoresNoma Security: Covers endpoint, SaaS and homegrown agents, plus AI-SPM and AI red teaming. Onyx Security: Browser AI, coding assistants, desktop agents, cloud workloads and MCP servers, plus agentic red teaming. | ||||
| Maturity | 10% | 7 | 7 | Tie |
Why these scoresNoma Security: SOC 2, ISO 27001, ISO 9001 and HIPAA listed; Gartner recognition cited by the vendor; pricing not published. Onyx Security: $113M Series B announced 29 July 2026; SOC 2 Type II and ISO 27001 listed; pricing not published. | ||||
| Total | 100% | 7.5 | 7.4 | Noma Security |
How do they deploy, and what do they cost?
| Attribute | Noma Security | Onyx Security |
|---|---|---|
| Owner | Not acquired | Not acquired |
| How it reaches devices | Through existing EDR or MDM | Endpoint agent, browser extension, API, gateway |
| Deployment detail | Noma states that it discovers agents, MCP servers and skills on employee endpoints through your existing EDR or MDM, with no new endpoint agent to deploy. SaaS and homegrown agent coverage connects through the platforms and environments where those agents run. | Onyx says it needs no SDK changes and works across endpoint agents, browser extensions, APIs and gateways. It integrates with Okta, Entra, Splunk and CrowdStrike. On devices this means a resident component, which is why it scores lower on footprint than tools that deploy through EDR or MDM. |
| Pricing | Contact sales. Noma Security does not publish pricing. | Contact sales. Onyx Security does not publish pricing. |
Source: noma.security · Noma endpoint agents · Noma platform · onyx.security · Onyx AI security · Onyx Series B · Reviewed Sep 2026
Which should you choose?
Choose Noma Security if
- Your priority matches our designation for Noma Security: best for endpoint plus SaaS and homegrown agents.
- You want a light rollout with published deployment detail, ideally through existing EDR or MDM: Noma Security scores 8 to 6.
- You need a fleet-wide inventory of AI agents, MCP servers, extensions and credentials on devices: Noma Security scores 8 to 7.
Choose Onyx Security if
- Your priority matches our designation for Onyx Security: best for inline control across many AI surfaces.
- You need to evaluate or stop individual tool calls before they run: Onyx Security scores 8 to 7.
- You want context-aware rules and answers beyond allow and block: Onyx Security scores 8 to 7.
Frequently asked questions
Which is better, Noma Security or Onyx Security?
Noma Security scores higher overall on our weights (7.5 vs 7.4 out of 10). Noma Security scores higher on visibility and footprint; Onyx Security scores higher on tool-call control and policy. They tie on identity and audit, maturity and breadth. Scores are editorial assessments from public vendor material, reviewed September 2026.
Do Noma Security and Onyx Security publish prices?
No. Neither publishes list prices, so ask both for a quote.
Do Noma Security or Onyx Security replace EDR?
No. The tools in this guide add control over AI agent actions and work alongside EDR. Noma Security: Through existing EDR or MDM. Onyx Security: Endpoint agent, browser extension, API, gateway.
Related
Sources
- noma.security · Reviewed Sep 2026
- Noma endpoint agents · Reviewed Sep 2026
- Noma platform · Reviewed Sep 2026
- onyx.security · Reviewed Sep 2026
- Onyx AI security · Reviewed Sep 2026
- Onyx Series B · Reviewed Sep 2026