RGESN
Environmental design of digital services, from user need to infrastructure and lifecycle.
Open guidance for sustainable software
Build less. Measure what matters.
Green Codex brings Green IT, accessibility and responsible AI practices into the coding workflow. It gives Codex evidence-based rules for designing, implementing, reviewing and auditing digital services.
One skill, four reference frameworks
GR491
Responsible design decisions across UX, frontend, backend, data, hosting and governance.
Opquast
Reliable, understandable and robust web experiences that complement environmental checks.
RGAA
Keyboard, focus, semantics, contrast, language and assistive technology checks.
Use it in any project
- Audit a codebase or architecture with cited evidence.
- Review a pull request for environmental and accessibility risks.
- Choose measurable, reversible improvements without sacrificing resilience.
- Keep official acronyms and references intact.
Rules that adapt to your stack
Green Codex routes universal NR practices and language-specific checks to the technologies it detects. The catalogue covers Java, Rust, C, C++, Go, Python, JavaScript and TypeScript, PHP, Ruby, Scala, Kotlin, Julia, Nim, Zig, Shell, SQL, PL/SQL, HTML5, CSS3, React, Vue, Angular, Svelte, Preact, Astro and Solid.
Each applicable rule returns PASS, FAIL or REVIEW_REQUIRED with code location, impact, severity and evidence.
Open and reusable
The skill is MIT licensed for code and CC BY 4.0 licensed for rules and documentation. Contributions and translations are welcome through pull requests.