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ruzzy

trailofbits/skills

Ruzzy is a coverage-guided fuzzer for Ruby built on libFuzzer. It enables fuzzing both pure Ruby code and Ruby C extensions with sanitizer support for detecting memory corruption and undefined behavior.

Installs740
Install command
npx skills add https://github.com/trailofbits/skills --skill ruzzy
Security audits
Gen Agent Trust HubPASS
SocketPASS
SnykPASS
About this skill
Ruzzy is a coverage-guided fuzzer for Ruby built on libFuzzer. It enables fuzzing both pure Ruby code and Ruby C extensions with sanitizer support for detecting memory corruption and undefined behavior. Ruzzy is currently the only production-ready coverage-guided fuzzer for Ruby. Choose Ruzzy when: Set up environment: Test with the included toy example: This should quickly find a crash demonstrating that Ruzzy is working correctly. Ruzzy supports Linux x86-64 and AArch64/ARM64. For macOS or Windows, use the Dockerfile or development environment . Install Ruzzy with clang compiler flags: Environment variables explained: If installation fails, enable debug output: Verify installation by running the toy example (see Quick Start section). Pure Ruby fuzzing requires two scripts due to Ruby interpreter implementation details.

Source description provided by the upstream skill listing. Community reviews and install context appear in the sections below.

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FAQ
What does ruzzy do?

Ruzzy is a coverage-guided fuzzer for Ruby built on libFuzzer. It enables fuzzing both pure Ruby code and Ruby C extensions with sanitizer support for detecting memory corruption and undefined behavior.

Is ruzzy good?

ruzzy does not have approved reviews yet, so SkillJury cannot publish a community verdict.

What agent does ruzzy work with?

ruzzy currently lists compatibility with codex, gemini-cli, opencode, cursor, github-copilot, claude-code.

What are alternatives to ruzzy?

Skills in the same category include telegram-bot-builder, flutter-app-size, sharp-edges, iterative-retrieval.

How do I install ruzzy?

npx skills add https://github.com/trailofbits/skills --skill ruzzy

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