Zenity
Agentic AI security (AISPM + agent detection & response)
Zenity secures AI agents across Microsoft Copilot, low-code platforms, Salesforce Agentforce and custom clouds — discovery and posture management (AISPM), least-privilege permission analysis, and runtime detection & response (AIDR). A 2025 Gartner Cool Vendor in Agentic AI TRiSM.
Source: zenity.io
Onyx Security
Secure AI control plane (discovery, runtime enforcement & AI gateway)
Onyx Security is a "secure AI control plane" built from five modules — AI Observability, AI Security, AI Governance, AI Orchestration and AI ROI. It continuously discovers every agent, MCP server and copilot across SaaS, cloud, endpoint and code, then inspects every prompt, response and tool call inline with five enforcement actions: alert, block, mask, steer or ask. Policy is written in natural language and compiled by Onyx's own proprietary models into runtime enforcement, with automatic mapping to OWASP LLM Top 10, NIST AI RMF, MITRE ATLAS, the EU AI Act and ISO 42001.
Source: onyx.security
How do Zenity and Onyx Security compare?
12 criteria that decide whether an enterprise can prove — not just hope — that its AI agents stay inside policy.
| Criterion | Zenity | Onyx |
|---|---|---|
| Deterministic, rule-based authorization Provable allow/deny decisions, not ML/probabilistic detection | ◐ | ◐ |
| Pre-execution enforcement Evaluates and blocks an action before it executes | ◐ | ● |
| Segregation of Duties enforcement Conflict-of-duty rules across agent actions | ○ | ○ |
| Excessive-agency prevention / least privilege Scopes each agent to the narrowest action surface | ● | ● |
| Design-time action-surface mapping Maps what an agent can do before it ships | ◐ | ◐ |
| Compliance-classified tools catalog Tools/MCP servers pre-scored against SoD & regulations at design time | ◐ | ◐ |
| Full lifecycle coverage (design-time + runtime) Governs the agent before and during production | ● | ● |
| Named-approver human-in-the-loop routing Routes risky actions to specific accountable approvers | ○ | ◐ |
| SOX / GDPR / financial-GRC control mapping & evidence Maps agent actions to financial & privacy control obligations | ◐ | ○ |
| AI-specific standards (ISO 42001, EU AI Act, NIST AI RMF, OWASP LLM) Alignment to emerging AI governance standards | ◐ | ● |
| Immutable / tamper-evident audit ledger Cryptographically defensible evidence of every decision | ◐ | ◐ |
| GRC / internal-audit / IT-governance buyer fit Built for the compliance owner, not only the security engineer | ○ | ◐ |
What is Zenity best at?
- Best-in-class agent discovery and inventory across Copilot, low-code and SaaS sprawl
- Mature AISPM with deep permission analysis and least-privilege enforcement
- Correlates build-time posture with runtime behavior — genuine lifecycle coverage
- Strong offensive research (AgentFlayer) and Gartner analyst validation
What is Onyx Security best at?
- Inline enforcement on every agent action, with five modes — alert, block, mask, steer, or ask (human in the loop)
- The broadest discovery in this set: agents, MCP servers, copilots and embedded AI across SaaS, cloud, endpoint and code, typically inventoried within 24 hours
- Per-agent identity distinct from the invoking user, so each tool and MCP call carries one line of accountability
- Automatic control mapping to OWASP LLM Top 10, NIST AI RMF, MITRE ATLAS, EU AI Act and ISO 42001, on SOC 2 Type II and ISO 27001
- New tools and MCP servers are detected, risk-scored and routed for approval before an agent can use them
- The heaviest funding in this set (~$153M), Fortune 500 deployments, and a Gartner Guardian Agents listing
What do Zenity and Onyx Security both leave to you?
Zenity and Onyx Security secure how agents operate — but neither enforces Segregation of Duties, maps an agent's action surface at design time, or produces SOX/GDPR-grade compliance evidence. That is the layer LangGuard adds.
- Deterministic, rule-based authorization on every action — reproducible and auditable, not probabilistic
- Segregation-of-Duties enforcement built in — the only vendor in this set to ship it
- Design-time action-surface mapping plus a compliance-classified tools catalog (SoD, SOX, GDPR, ISO 42001)
- Named-approver human-in-the-loop routing and an immutable, tamper-evident audit ledger
- Built for GRC, internal audit and IT governance — with SOX/GDPR control evidence
Which should you choose?
Zenity and Onyx Security are both strong runtime security tools. If your requirement is deterministic authorization, Segregation of Duties, design-time action-surface mapping, and audit-grade compliance evidence, LangGuard governs what agents are allowed to do — before they do it — and works alongside either.
Request Free TrialCommon questions
What is the difference between Zenity and Onyx Security?
Zenity is categorised as Agentic AI security (AISPM + agent detection & response). Onyx Security is categorised as Secure AI control plane (discovery, runtime enforcement & AI gateway). The practical difference is where each one sits relative to the agent's action: one governs the request path, the other governs the decision to allow the action at all.
Does Zenity enforce Segregation of Duties?
Zenity does not enforce Segregation of Duties. Segregation of Duties is a conflict-of-duty rule across an agent's actions — the control that stops one agent both raising and approving the same transaction. It is the criterion most agent-security tools leave to the customer.
Does Onyx Security enforce Segregation of Duties?
Onyx Security does not enforce Segregation of Duties. Check this against your own control matrix before assuming runtime monitoring covers it — detecting a violation after the fact is not the same control as preventing it.
Which one gives you SOX and GDPR compliance evidence?
Zenity produces logs that need work before an auditor will accept them. Onyx Security does not map to SOX or GDPR control obligations. Logging that an action happened is not the same as evidence that it was authorized against a named control, which is what an internal auditor asks for.
Can Zenity and Onyx Security be used together?
Yes. They operate at different layers, so running both is common — one handles the runtime path, the other the authorization decision. The question is not which to buy but which layer you have not covered yet.
How were these 12 criteria scored?
Each vendor was scored against 12 governance and compliance criteria using public documentation, product pages and published compliance material as of September 9, 2026. Full means the capability is documented and shipping; partial means it is indirect or requires customer-authored policy; absent means it is not publicly documented. No vendor was contacted for a private briefing.
How did we score this?
This comparison is first-party research by LangGuard. Every vendor in the set is scored against the same 12 governance and compliance criteria, drawn from public product documentation, pricing and compliance pages, and published technical material, last verified .
- ● Strong — the capability is documented and shipping.
- ◐ Partial — present but indirect, or dependent on policy the customer writes.
- ○ Absent — not publicly documented at the time of review.
We publish comparisons that include our own product, so treat the LangGuard column as a vendor claim and check it the same way you would check anyone else's. Scoring is against public material only; no vendor was given a private briefing or a right of reply. Found something out of date? Tell us and we will correct it.
Sources: Zenity — official site · Onyx Security — official site
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