Caido review
An affordable toolkit for interactive web and API penetration testing.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Caido is a security testing toolkit for penetration testers, bug bounty hunters and security engineers. It proxies and records HTTP and WebSocket traffic, supports interception, request replay and modification, and organizes work around projects, scopes, filters and findings. The product is available across web, Windows, macOS, Linux, a Chrome extension and an API, making it suitable for interactive web and API testing workflows.
Pricing is accessible for individual users. The Basic plan provides up to 2 projects, 7 workflows, 3 plugins and 5 filter presets, along with HTTPQL filtering and core HTTP tools. The Individual plan costs $20 per user per month or $200 per user per year and adds unlimited projects, workflows, plugins, filter presets and installations, plus nightly builds. Team adds shared instances, centralized billing, reassignable licenses and priority support. Enterprise adds unlimited users, purchase orders, reseller readiness and custom integrations.
Caido’s strongest fit is interactive application testing: HTTP and WebSocket interception, history, replay, payload-based automated attacks and HTTPQL filtering support investigation and traffic analysis. Its findings system helps track potential vulnerabilities, while a community plugin ecosystem and integrations with Anthropic, Google, OpenAI and OpenRouter extend the workflow. Caido should suit individuals and teams that want focused web and API testing with flexible project organization. Organizations that require verified evidence capture should consider an alternative with that capability as a central feature.
Caido pros and cons
- Where it wins
- Free plan plus $20 monthly Individual tier
- Interception, replay, filtering and automated attack workflows
- Project organization and finding tracking for security testing
- Where it doesn't
- Focused on interactive application testing rather than evidence capture
- Team and Enterprise plan pricing is not shown here
- Not open source, with extensibility provided through plugins
Caido fact sheet, pricing and score →
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