Caido
Lightweight web security auditing proxy written in Rust, offering fast HTTP traffic interception and workflow automation.
Technical Architecture & Overview
Caido is a modern web security auditing proxy written in Rust. Designed as a lightweight alternative to traditional Java-based tools, it uses a client-server architecture that can run locally or on remote VPS instances. Caido is proprietary software with a free Basic plan and paid Individual, Team, and Enterprise tiers.
Targeted Technical Use Cases
Web application testing and API auditing where resource efficiency and remote execution are priorities.
Evaluation & Trade-offs
Core Strengths
- +Fast startup and low memory footprint from its Rust backend.
- +Client-server architecture allows running the proxy on remote servers while controlling it locally.
- +Modern, responsive UI with an active open-source plugin ecosystem.
Trade-Offs & Limitations
- -Smaller extension ecosystem than older, established proxies.
- -Some advanced features require a monthly subscription.
Defensive Security Application
Testing web endpoints and mobile API traffic during security evaluations.
Frequently Asked Questions
What is Caido?→
Caido is a modern web security auditing proxy written in Rust. Designed as a lightweight alternative to traditional Java-based tools, it uses a client-server architecture that can run locally or on remote VPS instances. Caido is proprietary software with a free Basic plan and paid Individual, Team, and Enterprise tiers.
What is Caido used for?→
Web application testing and API auditing where resource efficiency and remote execution are priorities.
What are the strengths of Caido?→
- +Fast startup and low memory footprint from its Rust backend.
- +Client-server architecture allows running the proxy on remote servers while controlling it locally.
- +Modern, responsive UI with an active open-source plugin ecosystem.
What are the limitations of Caido?→
- +Smaller extension ecosystem than older, established proxies.
- +Some advanced features require a monthly subscription.
How is Caido used defensively?→
Testing web endpoints and mobile API traffic during security evaluations.