Portable, tested agent skills for GitHub Copilot, Codex, Claude Code, Cursor, Gemini CLI, and other Agent Skills compatible hosts.
| Skill | What it does |
|---|---|
create-skill |
**WORKFLOW SKILL** - Create and register a complete portable agent skill in a managed skills-repo.config.json repository or an existing skills repository. Produces focused instructions, documentation, deterministic tests, Vally evals, locked tooling, registration, and optional validated thumbnail art. USE FOR: create-skill, create a skill, add an agent skill, scaffold a portable skill, register a skill, add skill to managed repo, create skill in existing repo, generate an example skill from a fixture, add skill thumbnail art. DO NOT USE FOR: scaffolding a new marketplace collection from scratch (use create-skills-repo), editing one existing skill instruction without registration work (use skill-authoring), creating an agent persona. |
csv-analysis |
**WORKFLOW SKILL** - Analyze CSV files and generate statistical data quality reports. USE FOR: analyze CSV files, profile tabular data, inspect CSV quality, generate CSV reports. DO NOT USE FOR: editing spreadsheets or producing XLSX workbooks; use spreadsheet tooling instead. |
drawio-diagrams |
**WORKFLOW SKILL** - Create, validate, and edit accessible draw.io SVG diagrams that remain visually editable. Supports basic flowchart and architecture shapes, semantic styling, orthogonal connectors, strict specification validation, and embedded mxGraph XML. USE FOR: create a draw.io diagram, create a .drawio.svg, make an editable architecture or flow diagram, validate draw.io XML, use diagrams.net. DO NOT USE FOR: quick throwaway diagrams that do not need draw.io editability; use Mermaid instead, or complex cloud/UML diagrams that require full draw.io shape libraries; use draw.io Desktop or jgraph/drawio-mcp. |
marp-authoring |
**WORKFLOW SKILL** - Create and revise Marp decks with reliable slide structure, content transformations, speaker notes, layouts, and existing theme styles. USE FOR: create Marp slides, add a slide, rewrite slide content, split or merge slides, reorder a deck, add speaker notes, apply slide layouts, restyle slides. DO NOT USE FOR: generating chart or diagram assets; use marp-visuals, or reviewing overflow and rendering; use marp-slide-review. |
marp-slide-review |
**WORKFLOW SKILL** - Review rendered Marp slide decks for overflow, clipping, visual balance, asset failures, and HTML/PDF rendering differences. USE FOR: review Marp slides, check slide overflow, inspect rendered slides, lint a deck layout, verify slides fit, compare PDF rendering. DO NOT USE FOR: authoring slide content; use marp-authoring, or generating chart and diagram assets; use marp-visuals. |
marp-visuals |
**WORKFLOW SKILL** - Create deterministic charts, Mermaid diagrams, graphs, and accessible static visual assets for Marp decks. USE FOR: add a chart to slides, build a graph, create a Mermaid diagram, turn data into a slide visual, generate SVG assets for Marp. DO NOT USE FOR: editing slide narrative or layout; use marp-authoring, or creating diagrams that must remain editable in draw.io; use drawio-diagrams. |
pptx-to-marp-theme |
**WORKFLOW SKILL** - Extract brand colors, font families, logos, images, and slide dimensions from PowerPoint templates, generate a Marp CSS theme, and safely apply it to existing decks. USE FOR: convert a PowerPoint template to a Marp theme, extract PPTX or POTX branding, extract colors fonts logos and images, apply a PowerPoint-derived theme to existing Marp slides. DO NOT USE FOR: editing PowerPoint slide content; use PPTX tooling, or rewriting Marp slide narrative; use marp-authoring. |
List or install skills with the portable skills installer:
npx skills add https://github.com/codebytes/skills --list
npx skills add https://github.com/codebytes/skills --allInstall the complete Agent Plugins package:
copilot plugin install https://github.com/codebytes/skillsThe canonical content lives in skills/. The repository includes discovery
manifests for GitHub Copilot, Codex, ChatGPT desktop, Claude Code, Cursor,
Gemini CLI, and Agent Plugins compatible hosts.
npm ci --prefix .github/tools/vally --ignore-scripts
npm test --prefix .github/tools/vallyThe catalog lives in site/. Preview it locally before publishing:
npm ci --prefix site --ignore-scripts
npm run dev --prefix sitePublishing requires separate owner approval. The generated Pages workflow never runs on pull requests.
Use the bundled create-skill skill. Individual skill authoring does not
belong to the repository lifecycle tool.
MIT. See LICENSE.