Onyx Security

Onyx Security builds a secure AI control plane that helps enterprises discover sanctioned and shadow AI agents, monitor prompts and actions, and enforce security and governance policies in real time. The platform covers SaaS, cloud, endpoint, and code environments, and uses proprietary models and a supervisory Guardian Agent to inspect agent reasoning and remediate risky or noncompliant behavior.

Capabilities include AI observability, runtime and prompt-injection defense, identity and access governance for agents, MCP security, orchestration for cost and latency optimization, and ROI measurement of AI adoption. The company integrates with major model and agent providers and serves large enterprises in banking, technology, insurance, energy, and other regulated industries.