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Minibridge
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Minibridge

Minibridge is a backend-to-frontend bridging tool used to simplify and secure the communication between proxies and MCP servers. It securely exposes the MCP server to the Internet and can integrate policy services for authentication, content analysis, and transformation. It supports SBOM generation and verification, OTEL telemetry, and provides TLS encryption, monitoring, and tracking functions.
SecurityDeveloper tools#Communication bridge#Secure transport#Policy enforcement#Telemetry monitoring.Go
2.5 points
5.4K
Open Site

Overview

Installation

Content Details

Alternatives

What is Minibridge?

Minibridge is a middleware service that establishes a secure connection between your client application and the MCP server. It provides functions such as TLS encryption, user authentication, content analysis, and transformation, and can also monitor and track all communications.

How to use Minibridge?

You can use Minibridge by modifying the client configuration, replacing the original MCP server commands with Minibridge commands. Minibridge supports multiple operating modes, including the 'All-in-One' mode, which can simplify the deployment process.

Applicable scenarios

Minibridge is particularly suitable for scenarios that require secure remote access to the MCP server, content policy control, or monitoring and tracking of MCP communications.

Main features

Secure transport
Supports TLS encrypted communication with optional client certificate verification
Integrity check
Ensures that the MCP server cannot modify tools, templates, etc. during execution
User authentication
Transmits user information to the policy engine for authentication
Monitoring
Provides Prometheus metric monitoring
Telemetry
Supports OpenTelemetry tracing and span reporting
SBOM support
Generates a software bill of materials and verifies it in real-time
Advantages
Provides end-to-end secure communication guarantee
Supports flexible policy engine integration
Provides comprehensive monitoring and tracking capabilities
Simplifies remote access to the MCP server
Limitations
Requires additional configuration steps
May introduce slight performance overhead
The policy engine requires additional development or configuration

How to use

Install Minibridge
Get Minibridge from the GitHub repository or Docker Hub
Modify the client configuration
Replace the original MCP server commands with Minibridge commands
Start Minibridge
Select the appropriate operating mode according to your needs

Usage examples

Secure remote access to the MCP server
Securely expose the local MCP server to the Internet through Minibridge
Content policy enforcement
Use Rego policies to check and filter sensitive content

Frequently Asked Questions

What's the difference between Minibridge and directly using the MCP server?
How to solve the 'MCP fetch: spawn minibridge ENOENT' error?
Which policy engines does Minibridge support?

Related resources

GitHub repository
Source code and issue tracking for Minibridge
Docker Hub
Docker images for Minibridge
MCP Protocol official website
Official documentation for the Model Context Protocol
Discord community
Join the Minibridge Discord community

Installation

Copy the following command to your Client for configuration
{
  "mcpServers": {
    "fetch": {
      "command": "uvx",
      "args": ["mcp-server-fetch"]
    }
  }
}

{
  "mcpServers": {
    "fetch": {
      "command": "minibridge",
      "args": ["aio", "--", "uvx", "mcp-server-fetch"]
    }
  }
}
Note: Your key is sensitive information, do not share it with anyone.

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