Operant AI alternatives in Agent Authentication & Identity for AI

Operant AI positions itself as the only runtime AI and cloud application defense platform that unifies discovery, detection, and defense across APIs, LLM/GenAI apps, AI agents, MCP servers, and Kubernetes—all without code instrumentation or agent overhead. It differentiates from point-solution identity or authentication vendors by offering active, inline blocking (not just observability) at the runtime layer. The company claims to be the only vendor featured across all five of Gartner's most critical AI security reports in 2025, giving it third-party credibility in a nascent category. Its NHI (Non-Human Identity) access controls and MCP Gateway overlap with agent-identity competitors, but Operant's scope is broader—covering the full AI stack rather than authentication alone.