Design evals for LLM features — representative test sets, pass criteria, and regression checks so you know when output is good.
Production-ready agentic workflow building blocks: Plugins, agents, skills, and commands built for Claude Code and consumed natively by OpenAI Codex CLI, Cursor, OpenCode, Gemini CLI, and GitHub Copilot from a single Markdown source.
Author a capability once in Claude Code's plugin format, and ship it to every major agentic coding harness. A deterministic adapter layer translates the single canonical source into each harness's native packaging — so the instructions live in one place and never drift.
Building in phases — see the roadmap for detail.
rosetta marketplace — verified by a live
/plugin install in Claude Code.rosetta CLI translates a canonical plugin into
all five target harnesses with a per-component fidelity report:
Cursor, Codex CLI,
OpenCode, Gemini CLI, and
GitHub Copilot — each golden-file tested.plugin-scaffold, skill-writer,
catalog-curator), then the Languages family and the AI & ML cluster. 14 plugins across
10+ categories so far (coverage).Start with the docs index, or jump in:
See plugins/changelog/ for a fully-worked reference plugin.
MIT — see LICENSE.
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npx claudepluginhub meaganewaller/rosetta --plugin llm-evalsLint and harden shell scripts with shellcheck and robust-bash conventions.
Generate and maintain a Keep a Changelog–style CHANGELOG.md from git history.
Draft a clear, reviewer-friendly pull request description from the staged diff and commit history.
Produce a focused test plan for a change — what to test, at which level, and the edge cases worth covering.
Scan a diff or files for committed secrets and walk through safe remediation.
Comprehensive skill pack with 66 specialized skills for full-stack developers: 12 language experts (Python, TypeScript, Go, Rust, C++, Swift, Kotlin, C#, PHP, Java, SQL, JavaScript), 10 backend frameworks, 6 frontend/mobile, plus infrastructure, DevOps, security, and testing. Features progressive disclosure architecture for 50% faster loading.
Unity Development Toolkit - Expert agents for scripting/refactoring/optimization, script templates, and Agent Skills for Unity C# development
Complete creative writing suite with 10 specialized agents covering the full writing process: research gathering, character development, story architecture, world-building, dialogue coaching, editing/review, outlining, content strategy, believability auditing, and prose style/voice analysis. Includes genre-specific guides, templates, and quality checklists.
Comprehensive .NET development skills for modern C#, ASP.NET, MAUI, Blazor, Aspire, EF Core, Native AOT, testing, security, performance optimization, CI/CD, and cloud-native applications
Modern R development skills for Claude Code - tidyverse patterns, rlang metaprogramming, Bayesian inference, performance optimization, and more
Tools to maintain and improve CLAUDE.md files - audit quality, capture session learnings, and keep project memory current.