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Caido

Lightweight web security auditing toolkit

Description

Caido is a lightweight, fast web security auditing tool. Think of it as a modern alternative to Burp Suite, built with performance in mind. Features include request interception, replay, and automation.

Installation

BASH
# Download from https://caido.io/download
# Available for Linux, macOS, Windows

# Linux AppImage
chmod +x caido-desktop-linux-x86_64.AppImage
./caido-desktop-linux-x86_64.AppImage

Key Features

  • Intercept — Capture and modify HTTP/S requests
  • Replay — Resend modified requests
  • Automate — Script workflows with JavaScript
  • Search — Full text search across all traffic
  • Sitemap — Visual sitemap generation

Basic Usage

TEXT
1. Launch Caido and configure browser proxy (default 127.0.0.1:8080)
2. Install Caido CA certificate for HTTPS
3. Browse target — all traffic captured
4. Use Intercept tab to modify requests in transit
5. Use Replay tab to resend and modify specific requests

Tips

TEXT
# Scope configuration
Settings → Scope → Add target domains

# Export requests
Select request → Export as cURL/raw

# Keyboard shortcuts
Ctrl+I — Toggle intercept
Ctrl+R — Send to Replay