Agent skills have trended for five straight days — new repos from Matt Pocock, Addy Osmani and Anthropic, plus developers on X asking for "a skill that finds competitors in one click." Pick your coding agent below; install the matching skills; make your $20/month subscription do the work of two tools.
The short answer: Agent skills are free, reusable instruction packs that make Claude Code, Codex, or Copilot dramatically better at specific jobs (diagrams, design systems, research workflows). The repos worth installing this week: mattpocock/skills and addyosmani/agent-skills (general collections), cathrynlavery/diagram-design (42 diagram types), and anthropics/knowledge-work-plugins (Claude Cowork plugins). Skills run inside the subscription you already pay for — no new bill. Install one general collection first, then add a specialist for your workflow.
Recommendations curated from repos trending on GitHub and X, Oct 6–10, 2026. Check each repo's README for install steps.
| Skill repo | What it does | Works with |
|---|---|---|
| mattpocock/skills | General-purpose skill collection from a TypeScript educator; practical day-to-day agent upgrades | Claude Code |
| addyosmani/agent-skills | Curated agent skills collection; broad coverage for coding workflows | Claude Code, Codex |
| anthropics/knowledge-work-plugins | Official Anthropic plugins for knowledge work, built for Claude Cowork | Claude Cowork |
| cathrynlavery/diagram-design | 42 diagram types (architecture, flow, ER and more) generated by your agent | Claude Code, Codex, Copilot |
| Creator canvas skill (reported on X) | Editable canvas plus one-click export of generated images to multiple platforms — surfaced by @ai_xiaomu, Oct 10, 2026 | Ask the author for the repo link |
Repos confirmed trending via GitHub Trending and developer discussion, Oct 6–10, 2026. Star counts and APIs change fast — verify on GitHub before installing.
~/.claude/skills/), then start a new session.Agent skills are reusable instruction packs that teach an AI coding agent (Claude Code, Codex, Copilot) how to do a specific job well — generating diagrams, following a design system, running a research workflow. You install them once; the agent then applies them automatically. Most skill repos are free and open source on GitHub.
No. Skills run inside the agent you already pay for, so they make your existing subscription more valuable instead of adding a new bill. That is the whole point: a $20/month Claude Pro subscription with the right skills can replace work you'd otherwise pay a second tool to do.
Start with a general-purpose collection for your agent: mattpocock/skills or addyosmani/agent-skills for Claude Code-style agents. Then add one specialist: cathrynlavery/diagram-design if you make architecture diagrams, anthropics/knowledge-work-plugins if you use Claude Cowork. Use the picker above to match skills to your agent.
Most skills install in three steps: 1) clone the repo or copy the skill folder, 2) place it in your agent's skills directory (for Claude Code: ~/.claude/skills/), 3) restart the agent or start a new session. Check each repo's README — plugin marketplaces (e.g. Claude Cowork plugins) may offer one-click install.
Treat skills like any third-party code: read what a skill does before installing, prefer repos with real activity and many users, and never install a skill that asks for credentials it doesn't need. The repos listed on this page are the ones the developer community has been actively starring and discussing since early October 2026.