Eleventy + Nunjucks

Operational defaults for Eleventy v3 and Nunjucks static sites — directory layout, configuration surface, filter inventory, autoescape rules, stability and security checks. Load this skill when authoring templates, editing build config, or reviewing static output before merge or deploy.

Naming note (June 2026): Eleventy is also branded as Build Awesome — see the official “Eleventy is now Build Awesome” announcement. Code identifiers remain compatible: npm package @11ty/eleventy, CLI eleventy, config .eleventy.js / eleventy.config.js, and docs at 11ty.dev. This skill uses “Eleventy” for existing code and ecosystem terms; treat “Build Awesome” mentions in source material as synonymous. Re-check current docs before changing version-sensitive guidance.

When this skill applies

Trigger on any of:

• Paths mentioning .eleventy.js, eleventy.config.{js,mjs,cjs}, .njk, src/_includes/, src/_data/
• package.json lists @11ty/eleventy
• Topics: 11ty, Eleventy, Nunjucks, SSG, JAMstack, static site, layout chain, permalink, collection, shortcode, filter, dev server, CSP, JSON-LD in templates

Operating procedure