Pomerium for AI Agent Security: Features, Pricing, and Alternatives

Pomerium is an open-source, zero-trust identity-aware proxy designed to replace traditional VPNs by providing context-aware access control for internal applications and infrastructure. Founded by Bobby DeSimone, Pomerium has gained significant traction, offering a clientless architecture that evaluates identity, device posture, and contextual signals for access requests. This approach is particularly advantageous for securing AI agent workflows through its support for the Model Context Protocol (MCP), which prevents unauthorized access and prompt injection attacks. Pomerium issues short-lived JSON Web Tokens (JWTs) for secure and dynamic access management, and its clientless architecture simplifies infrastructure by allowing agents to interact with protected resources via authenticated HTTP requests. While Pomerium focuses on internal access control, WorkOS serves a different niche by providing comprehensive enterprise authentication solutions for B2B SaaS applications, including features like Single Sign-On, Directory Sync, and compliance tools. These two platforms complement each other, with Pomerium securing internal infrastructure and WorkOS handling customer-facing authentication needs, making them suitable for different aspects of enterprise security architecture.