Permit.io MCP Gateway

Permit.io MCP Gateway Introduction

Permit.io MCP Gateway is a security middleware that acts as a zero-trust proxy for MCP (Model Context Protocol) servers, adding fine-grained authorization, governance, and integration with existing identity providers without requiring code changes. It enables OAuth authentication, Zanzibar-style authorization, consent screens, and full audit logging for every tool call made by AI agents, addressing critical security gaps in MCP deployments.

Key Features

Fine-grained access control using RBAC, ABAC, and ReBAC policies

OAuth authentication and Zanzibar-style authorization for secure agent access

Consent screens and comprehensive decision logging for auditability

Drop-in deployment as a proxy with no SDK or code changes required

Compatibility with any MCP server for seamless integration

Use Cases

Enterprises securing AI agent access to internal tools and systems with governance and compliance requirements

Developers building AI applications that need controlled and auditable tool access in production environments

CISOs enforcing real-time authorization, audit trails, and identity verification for AI operations

Startups scaling AI agent deployments quickly without investing in complex security infrastructure

Why Startups Use It

Startups need the Permit.io MCP Gateway to quickly secure AI agent deployments without extensive development overhead, enabling them to scale securely and comply with governance standards. It provides a drop-in solution that reduces time-to-market and allows startups to focus on innovation while maintaining robust security as they grow.

Frequently Asked Questions

How does the MCP Gateway enhance MCP security?

It adds a security layer with fine-grained authorization, OAuth authentication, consent management, and audit logging, addressing the limitations of built-in MCP auth such as lack of governance and IdP integration.

What is required to deploy the MCP Gateway?

Simply replace the MCP server URL with the gateway URL; no changes to agent or server code are needed, and no SDK installation is required, making it a drop-in solution.

Does it work with all MCP servers?

Yes, it is designed to be compatible with any MCP server, acting as a proxy that intercepts and secures requests without modifying the underlying server.

How does it handle user authentication and consent?

It integrates with existing IdP infrastructure via OAuth, supporting methods like email/password, social logins, and enterprise SSO (e.g., SAML, OIDC), and includes consent screens for user approval.

Permit.io MCP Gateway