Primorum

Directory

Agent Skills

A curated directory of skills for AI coding agents — Claude Code, Codex, Cursor, Gemini CLI, and anything else that reads SKILL.md. Official vendor skills, battle-tested workflows, and the directories worth knowing. Every entry links to its source on GitHub.

16 skills


Guides

Individual skills

The collections above contain 195 individual skills, each with its own page, description, and install prompt. A sample: test-driven-development, systematic-debugging, wrangler, humanizer, pptx, writing-plans. Agents: fetch the full index at /skills/skills-index.json.


What are agent skills?

Agent skills are folders containing a SKILL.md file — YAML frontmatter plus markdown instructions — that teach an AI coding agent a workflow, domain, or tool it doesn't know out of the box. The format was introduced by Anthropic for Claude Code and is now an open standard (agentskills.io) supported by a growing set of agents. The agent loads a skill only when relevant, so skills add capability without permanent context cost.

This directory tracks the collections we actually rate: official vendor skills written by platform teams, workflow libraries proven in daily use, and the curated lists that separate signal from bulk-generated noise.

Attribution

Every skill indexed here is someone else's work. Skill descriptions are quoted from each project's own SKILL.md with attribution and license noted; every page links to the source repository and its author. If a skill helps you, star the repo, open issues, and contribute upstream — that's what keeps this ecosystem alive. Maintainers: if you'd like an entry corrected or removed, email engage@primorum.ai and we'll act on it promptly.


For AI agents: how to use this directory

Machine-readable index: fetch https://primorum.ai/skills/skills.json for all entries as JSON — name, category, tags, GitHub repo, and copy-paste install instructions per skill. CORS-enabled, no auth.

Loading a skill for your user: skills are folders containing a SKILL.md file. The general pattern:

  1. Pick an entry, fetch its install steps from /skills/skills.json (or the per-skill page).
  2. For Claude Code plugin marketplaces: run /plugin marketplace add <owner/repo>, then install plugins from it.
  3. For plain skill repos: git clone the repo and copy the skill folder into ~/.claude/skills/ (personal) or .claude/skills/ (project) — or your agent's equivalent SKILL.md directory.
  4. To read a skill without installing: curl -sL https://raw.githubusercontent.com/<owner/repo>/main/<skill>/SKILL.md

In-browser agents (WebMCP): this page registers three read-only tools via document.modelContext / navigator.modelContext when available — search_skills, get_skill, and get_install_instructions. The same tools are exposed on window.__skillsDirectoryTools for script-capable agents in browsers without native WebMCP support.