Craft, packaged.
A skill is a set of instructions a coding agent loads before it starts working, so the work comes out in a known shape instead of a generic one. These five carry the conventions I use every day: a visual language with verified tokens, command-line tooling, and manuscript review in two languages. Two are open; the rest run locally.
Pure Design UI
madsondeluna/skill-pure-design-ui OpenThe visual language behind every interface here. Four colour modes, tokens checked by script, glass and liquid materials, a pointer-driven light layer, motion recipes, twelve review routines and matplotlib and plotly themes. It ships the language files, so a project starts already inside the conventions.
CLI DevOps with ultimate UI
madsondeluna/skill-cli-devops-and-ui Open · pageTerminal tools that survive a pipe and still look like something. Behaviour comes first: streams, exit codes, help text, TTY detection, configuration precedence, completion. Appearance follows: gradients, spinners, live panels, tables and diffs. Covers Bash, Python, TypeScript, Go and Rust, and audits an existing tool without rewriting what already works.
CLI design
LocalThe behaviour half on its own: command and flag naming, defaults, prompts and confirmations, error messages, exit codes, and what changes when the program is not attached to a terminal. Unix and PowerShell aware.
Claire, scientific writing
LocalWrites, edits and reviews scientific manuscripts in English: language editing, numeric consistency audits, a Reviewer 2 appraisal, thesis structure, cover letters and responses to reviewers. Checks citations, identifiers and journal rules against the literature databases without sending the manuscript anywhere.
Clara, revisora científica
LocalThe same craft in Brazilian Portuguese, with what the language demands of its own: gene and species nomenclature, decimal comma, and the vocabulary rules that keep academic prose from sounding machine-written.
Install one
A skill is a folder with a SKILL.md and its references. Copy it into the agent's skills directory and it becomes available by name. A skill that exists only in its repository cannot be loaded, whatever a listing says.
git clone https://github.com/madsondeluna/skill-pure-design-ui
cp -R skill-pure-design-ui/skills/* ~/.claude/skills/Seen working
The atlas of protein language models on this site is built entirely inside the first two: the interface follows Pure Design, and every check it had to pass came from the review routines that ship with the skill.