MCP Contrast

Contrast MCP Server is a bridge that connects Contrast security data with AI agents/LLMs, helping developers and security professionals quickly fix vulnerabilities. It supports multiple deployment methods, including local running and Docker containers, and can be integrated with tools such as VS Code and Copilot.

Security Developer tools #Vulnerability repair #Security analysis #AI integration #Development tools .Java

rating : 2 points

downloads : 23

update time : 2025-04-29

What is Contrast MCP Server?

Contrast MCP Server is a bridge that connects your Contrast data with the AI agent/LLM of your choice. It enables developers and security professionals to leverage AI capabilities to quickly identify and fix security vulnerabilities in code.

How to use Contrast MCP Server?

You can use the MCP Server in multiple ways: run it as a standalone Java application, deploy it via a Docker container, or integrate it into development tools such as VS Code, Cline plugins, and oterm.

Applicable scenarios

It is suitable for developers who need to quickly fix code vulnerabilities and security professionals who need to analyze the security status of applications. It is particularly suitable for scenarios where there are a large number of vulnerabilities to handle or automated repair suggestions are required.

Main features

Vulnerability repairProvide detailed analysis and repair suggestions for code vulnerabilities

Third - party library analysisIdentify and update vulnerable third - party libraries

Security analysisProvide vulnerability analysis of applications and servers for security professionals

Multi - platform integrationSupport multiple development tools such as VS Code, Cline plugins, and oterm

Advantages and limitations

Advantages

Combine Contrast's unique vulnerability data and AI capabilities to provide accurate repair suggestions

Support multiple deployment methods, flexible and easy to use

Seamlessly integrate with existing development tools

Provide detailed vulnerability analysis and context information

Limitations

Contrast API credentials are required for use

Data privacy depends on the AI agent/LLM you choose

Some advanced features may require technical knowledge for configuration

How to use

Get Contrast API credentials

You need to prepare Contrast API key, service key, username, and organization ID

Choose a deployment method

Decide whether to run directly with Java, use a Docker container, or integrate into a development tool

Configure the MCP Server

Configure the corresponding environment variables or parameters according to the deployment method you choose

Start querying

Enter queries through the interface you choose to get vulnerability information and repair suggestions

Usage examples

Developers fix code vulnerabilitiesDevelopers find security vulnerabilities in the code and use the MCP Server to get detailed vulnerability descriptions and repair suggestions

Security professionals analyze library vulnerabilitiesThe security team needs to identify all high - risk third - party library vulnerabilities in the application

Update vulnerable librariesDevelopers need to update vulnerable libraries to secure versions

Frequently Asked Questions

Will the MCP Server send my code to Contrast?

What kind of Contrast account do I need to use the MCP Server?

Which AI agents/LLMs does the MCP Server support?

How to use the MCP Server behind a corporate proxy?

Related resources

GitHub repository

Source code and issue tracking for Contrast MCP Server

Contrast Security official website

Official website for Contrast security products

Maven Central

Maven Central repository for the MCP Server

🚀 MCP Server Configuration and Installation Guide

Site-to-Site VPN Configuration

Basic Configuration Steps:

Download and Install OpenVPN:
- Download the OpenVPN software package suitable for your operating system and install it according to the official documentation.
Generate Certificates and Keys:
- Use OpenVPN's easyrsa tool to create CA certificates, server certificates, and client certificates. The specific commands are as follows:
```
./easyrsa init-config
./easyrsa build-ca
./easyrsa gen-req server-name
./easyrsa sign-cert server-name
```

Configure the OpenVPN Server:

Open the server.conf file and add the following content. Adjust the parameters according to your actual needs:

# Network interface binding settings
port 1194
proto udp
dev tun

# Encryption suite configuration
ca.crt "C:/path/to/ca.crt"
cert.pem "C:/path/to/server.crt"
key.pem "C:/path/to/server.key"

# IP configuration
server 10.9.0.0 255.255.254.0

# Recommended DNS settings
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"

# Client connection timeout settings
keepalive 10 120

# Logging configuration
log /var/log/openvpn.log
log-append
verb 3

# Enable compression
comp-lzo

# Disable route redirection (adjust as needed)
client-to-client

Start the OpenVPN Server:
- Run the following command to start the service and ensure that the log file contains correct output:
```
./openvpn --config server.conf
```

Configure Client Connections:

Create and distribute the client configuration file client.ovpn with the following content:

remote vpn.example.com 1194 udp
dev tun
proto udp
ca.crt "C:/path/to/ca.crt"
cert.pem "C:/path/to/client.crt"
key.pem "C:/path/to/client.key"

# DNS settings
dhcp-option DNS 8.8.8.8
dhcp-option DNS 8.8.4.4

# Connection timeout settings
keepalive 10 120

Test the Connection:
- Run the following command on the client to verify whether the VPN connection is successful:
```
./openvpn --config client.ovpn
```

MCP Server Installation and Configuration

Installation Methods:

Using the Java Package:

Download the latest version of the MCP tile (JAR file).

Run the following command to start the MCP service:

java -jar mcp-contrast-0.0.1-SNAPSHOT.jar --CONTRAST_HOST_NAME=example.contrastsecurity.com --CONTRAST_API_KEY=example --CONTRAST_SERVICE_KEY=example --CONTRAST_USERNAME=example@example.com --CONTRAST_ORG_ID=12345

Open a browser and access http://localhost:8080 for functional testing.

Using the Docker Image:

Pull the MCP service image:
```
docker pull mcp/contrast:v1.0.0
```

Start the container and map the ports:

docker run -d --name contrast -p 8080:8080 mcp/contrast:v1.0.0

Custom Installation:

Clone the source code repository of the MCP project.
Build the project using Maven or Gradle to generate an executable file or a Docker image.

Environment Variable Configuration:

MCP supports configuration through environment variables. Create a .env file and add the following content:

CONTRAST_HOST_NAME=example.contrastsecurity.com
CONTRAST_API_KEY=example
CONTRAST_SERVICE_KEY=example
CONTRAST_USERNAME=example@example.com
CONTRAST_ORG_ID=12345

When starting the service, load the environment variable file:

java -Dspring.config.location=.env -jar mcp-contrast-0.0.1-SNAPSHOT.jar

MCP Server Comparison

MCP provides comparisons in various protocols and functions. The following is a comparison table of the functions of common protocols:

Feature	HTTP/HTTPS	FTP	SFTP	SCP
Authentication Method	Basic authentication, Digest authentication, JWT	Username and password	Username and password	Username and password
Data Encryption	SSL/TLS	Plain text	SSH key	SSH key
Transfer Speed	High	Medium	High	High
Connection Stability	Stable	Prone to disconnection	Stable	Stable
File Handling Capacity	Supports large files	Supports large files	Supports large files	Supports large files
Integration Difficulty	High	Low	Medium	Medium

Proxy Configuration Guide

In some network environments, you may need to configure a proxy server to access the MCP service. The following are common proxy configuration methods:

HTTP Proxy Configuration:

Modify the startup command of the MCP service and add proxy parameters:

java -Dhttp.proxyHost=http://proxy.example.com -Dhttp.proxyPort=8080 -jar mcp-contrast-0.0.1-SNAPSHOT.jar

Or configure proxy information in the environment variables:

export HTTP_PROXY=http://proxy.example.com:8080
java -jar mcp-contrast-0.0.1-SNAPSHOT.jar

SOCKS Proxy Configuration:

Set the system-wide SOCKS proxy:

export JAVA_OPTS="-DsocksProxyHost=proxy.example.com -DsocksProxyPort=1080"
java $JAVA_OPTS -jar mcp-contrast-0.0.1-SNAPSHOT.jar

No Proxy Configuration:

If you need to disable the proxy, you can set the following environment variables:

export NO_PROXY=localhost,127.0.0.1
java $NO_PROXY -jar mcp-contrast-0.0.1-SNAPSHOT.jar

Security Precautions

To ensure the security of the MCP service, please follow the following best practices:

Access Control:
- Use a firewall to restrict external access.
- Configure authentication and authorization mechanisms.
Data Encryption:
- Ensure that all communications use SSL/TLS encryption.
- Update certificates regularly and avoid using outdated encryption suites.
Log Monitoring:
- Enable detailed logging.
- Review log files regularly to detect abnormal behavior.
Vulnerability Fixes:
- Update the software to the latest version in a timely manner.
- Configure a Web Application Firewall (WAF) to protect the web service.

Frequently Asked Questions

Q: What should I do if the MCP service fails to start?

A: Check the log file to view the specific error information. Ensure that all dependencies are installed correctly and the network connection is normal.

Q: How can I handle the slow transfer speed of large files?

A: Ensure that the server and client have sufficient bandwidth. Optimize the network configuration and use more efficient compression algorithms or chunked transfer techniques.

Q: What should I do if the MCP service cannot access the Internet?

A: Check whether the proxy configuration is correct. If you need to access the Internet, ensure that you have legal permissions and sufficient bandwidth.

Summary

Through the above steps and best practices, you can successfully install, configure, and run the MCP service. If you have any questions or suggestions, please contact the technical support team at any time.