Minibridge MCP Server

What is Minibridge?

Minibridge is a backend-to-frontend bridge that streamlines and secures communication between Agents and MCP servers. It safely exposes MCP servers to the internet and integrates with generic policing services (Policers) for agent authentication, content analysis, and transformation. It also supports SBOM (Software Bill of Materials) generation and real-time validation to ensure MCP server integrity.

How to use Minibridge?

Minibridge can run in all-in-one mode (minibridge aio), backend mode (minibridge backend), or frontend mode (minibridge frontend). The all-in-one command starts a single gateway in front of a stdio-based MCP server. Backend mode exposes an MCP server over WebSocket, while frontend mode exposes a local stdio, HTTP+SSE, or HTTP+STREAM interface that forwards to a backend. TLS can be configured in all modes.

Key features of Minibridge

• Acts as a secure gateway for MCP servers to the internet
• Supports all-in-one, backend, and frontend deployment modes
• Integrates with HTTP or Rego-based Policers for authentication and content control
• Generates and validates SBOMs for MCP server integrity
• Provides strong client authentication via TLS client certificates
• Supports bidirectional communication via WebSocket, HTTP+SSE, and stdio

Use cases of Minibridge

• Exposing a local stdio MCP server to remote agents over HTTP+SSE or WebSocket
• Enforcing agent authentication and request analysis via an external Policer
• Ensuring an MCP server has not been tampered with using SBOM checks
• Providing a secure, TLS-encrypted gateway for MCP communication
• Offloading policy decisions to a remote HTTP service or local OPA Rego file