OpenAI's official plugin: Codex reviews of your changes and task delegation to Codex from inside a Claude Code session
Plugins
Editors’ pick
Trail of Bits skills
Trail of Bits Skills Marketplace
Trail of Bits plugin marketplace for security work: smart contracts, C/C++ and Rust review, Semgrep, CodeQL and fuzzing
Editors’ pick
Official skills and agents from the .NET team: performance, MSBuild, NuGet, upgrades, testing, ASP.NET Core, Blazor and MAUI
A Claude Code plugin for the Phoenix LLM observability platform: remote MCP plus skills for traces, evals and instrumentation
A Claude Code and Codex plugin with skills for code research, tests, refactoring and independent review of finished changes
A large Claude Code and Cursor plugin: development skills, specialist agents and hooks with quality gates and git protection