agent-skills

Write a skill once, run it in every coding agent. Portable SKILL.md skills for Claude Code, GitHub Copilot CLI, Codex, and Cursor — from one source of truth.

Portable Agent Skills by Biswajeet Das. One SKILL.md source of truth, installable across Claude Code, GitHub Copilot CLI, Codex CLI, and Cursor via per-harness manifests — because skills are an open standard, not a single-vendor format.

Skills

Install once — the skills plugin bundles all three.

Install

This repo is a marketplace with one plugin (`skills`) that bundles all three skills. A Claude Code plugin loads every skill it contains, so a single install gets the whole set — cleanly, no duplicates.

Claude Code

claude plugin marketplace add BiswaViraj/agent-skills
claude plugin install skills@biswaviraj-skills

Or, with @biswaviraj/cc-setup, it's in the palette — run npx @biswaviraj/cc-setup@latest and pick it.

GitHub Copilot CLI

Copilot CLI shares Claude Code's plugin/marketplace system:

copilot plugin marketplace add BiswaViraj/agent-skills
copilot plugin install skills@biswaviraj-skills

Codex CLI

codex plugin marketplace add BiswaViraj/agent-skills
codex plugin install skills@biswaviraj-skills

Or drop a single skill straight into a folder Codex scans (~/.agents/skills/ for personal, <repo>/.agents/skills/ per-project):

git clone https://github.com/BiswaViraj/agent-skills /tmp/agent-skills
cp -r /tmp/agent-skills/skills/standup ~/.agents/skills/standup

Cursor

cursor plugin marketplace add BiswaViraj/agent-skills
cursor plugin install skills@biswaviraj-skills

Usage

reviewloop — on a branch with an open PR:

reviewloop this PR

or "clear all the reviews", "address every reviewer", "loop until the PR is clean".

ciloop — when CI is red:

ciloop

or "fix the failing CI", "make the checks pass", "loop until CI is green".

standup — anytime:

write my standup

or "what did I do since Friday", "what did I ship this week".

Layout

agent-skills/
├─ .claude-plugin/      # Claude Code + Copilot CLI — marketplace.json (one 'skills' plugin)
├─ .codex-plugin/       # Codex CLI (plugin.json)
├─ .cursor-plugin/      # Cursor (plugin.json)
└─ skills/
   ├─ reviewloop/
   │  ├─ SKILL.md
   │  └─ references/github-mechanics.md
   ├─ ciloop/
   │  ├─ SKILL.md
   │  └─ references/gh-ci.md
   └─ standup/
      ├─ SKILL.md
      └─ standup.sh

Adding a skill: drop a new folder under skills/ — it ships with the skills plugin automatically (a plugin loads every skill it contains; no marketplace.json change needed).

Related

The harnesses these skills run in: Claude Code · GitHub Copilot CLI · Codex CLI · Cursor

The review bots reviewloop drives: Greptile · CodeRabbit · GitHub Copilot code review

The standard: Agent Skills — the open SKILL.md spec adopted across 30+ agents.

See also: @biswaviraj/cc-setup — one command to load your plugins + MCP servers (including these skills) into any project.

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License

MIT © Biswajeet Das