mitm-help

Explain the @withseismic/mitm proxy plugin for traffic interception and modification.

Updated Feb 11, 2026
One-click install
npx skills add https://github.com/dougwithseismic/node-mitm-proxy --skill mitm-help
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mitm-help
Source: https://github.com/dougwithseismic/node-mitm-proxy/tree/main/skills/mitm-help
Command: npx skills add https://github.com/dougwithseismic/node-mitm-proxy --skill mitm-help

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill provides a comprehensive overview of the @withseismic/mitm proxy, demystifying its capabilities for inspecting, modifying, and managing network traffic.

Core Features & Use Cases

  • Traffic Interception & Inspection: Capture and analyze all HTTP/HTTPS requests and responses.
  • Rule-Based Traffic Manipulation: Create rules to modify, block, redirect, or mock network traffic in real-time.
  • REST API Control: Programmatically manage the proxy and its rules via a local API.
  • Use Case: When debugging a web application, use this Skill to understand exactly what data is being sent and received, and to test how the application behaves under different network conditions or with modified responses.

Quick Start

Use the mitm-help skill to get an overview of the MITM proxy's capabilities.

Frequently Asked Questions about mitm-help

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I intercept and inspect HTTP network traffic for debugging?

To intercept and inspect HTTP network traffic for debugging, use a MITM proxy plugin to capture and analyze all HTTP/HTTPS requests and responses in real-time. This allows you to see exactly what data is being sent and received by your application.

Can I modify or mock network responses in real-time using a proxy?

Yes, you can modify or mock network responses in real-time using a proxy by creating rules through a rule engine. This allows you to block, redirect, or manipulate traffic to test how your application behaves under different conditions.

What is a rule engine for network traffic manipulation?

A rule engine for network traffic manipulation is a system within a MITM proxy that lets you define conditions to automatically modify, block, redirect, or mock HTTP/HTTPS requests and responses as they pass through the proxy.

How do I programmatically control proxy settings via a REST API?

You can programmatically control proxy settings via a local REST API provided by the MITM proxy plugin. This API allows you to dynamically manage the proxy instance and update its traffic manipulation rules during runtime.

Does the mitm-help plugin require external dependencies to intercept traffic?

No, the mitm-help plugin does not require external dependencies to intercept traffic. It operates independently using internal scripts to provide network traffic interception, inspection, and modification capabilities.