Lunar.dev MCP Gateway (MCPX) vs Onyx Platform: Side-by-Side Comparison (2026)

Lunar.dev MCP Gateway (MCPX): Gateway for securing, governing, and auditing AI agent access to MCP servers. built by Lunar.dev. Core capabilities include Centralized MCP server registry with service discovery for local and remote servers, Role-based access control (RBAC) with per-agent tool restrictions and on-behalf-of attribution, Authentication to MCP servers via API keys or OAuth..

Onyx Platform: AI control plane for enterprise AI agent security, governance, and observability. built by Onyx Security. Core capabilities include Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection..

Both serve the Agentic AI Security market but differ in approach, feature depth, and target audience.

Lunar.dev MCP Gateway (MCPX) differentiates with Centralized MCP server registry with service discovery for local and remote servers, Role-based access control (RBAC) with per-agent tool restrictions and on-behalf-of attribution, Authentication to MCP servers via API keys or OAuth. Onyx Platform differentiates with Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection.

Lunar.dev MCP Gateway (MCPX) is developed by Lunar.dev. Onyx Platform is developed by Onyx Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Lunar.dev MCP Gateway (MCPX) integrates with Okta, Azure AD, Lunar.dev AI Gateway. Onyx Platform integrates with AWS, AWS VPC, AWS Bedrock, GCP, Azure and 6 more. Check integration compatibility with your existing security stack before deciding.

Lunar.dev MCP Gateway (MCPX) and Onyx Platform serve similar Agentic AI Security use cases: both are Agentic AI Security tools, both cover Agentic AI Security, AI Governance, AI Observability. Review the feature comparison above to determine which fits your requirements.