Agent Skills

Reusable agent skills for Codex and other Agent Skills compatible tools.

Skills are packaged under skills// so this repository can hold multiple installable skills.

Repository Layout

• skills/: installable agent skills discovered by npx skills and gh skill
• templates/: copyable project templates such as AGENTS.md and CLAUDE.md

Available Skills

• prd: Create or update evidence-backed living PRDs and phase execution files under tasks/.
• review-implementation: Review code against markdown requirements/spec docs, identify gaps and risks, and apply focused fixes.

Templates

• templates/AGENTS.md: concise project instruction template for coding agents
• templates/CLAUDE.md: delegates Claude-compatible tools to AGENTS.md

Copy the templates into a project root and customize the placeholders:

cp templates/AGENTS.md /path/to/project/AGENTS.md
cp templates/CLAUDE.md /path/to/project/CLAUDE.md

Install

skills.sh / npx skills

Install globally for Codex:

npx skills add https://github.com/playmoreai/agent-skills/tree/main/skills/prd \
  -g \
  -a codex \
  -y
npx skills add https://github.com/playmoreai/agent-skills/tree/main/skills/review-implementation \
  -g \
  -a codex \
  -y

Or install from the repository and select a skill:

npx skills add playmoreai/agent-skills --skill prd -g -a codex -y
npx skills add playmoreai/agent-skills --skill review-implementation -g -a codex -y

List available skills in this repository:

npx skills add playmoreai/agent-skills --list

GitHub CLI gh skill

Requires GitHub CLI 2.90.0 or newer.

gh skill install playmoreai/agent-skills prd --agent codex --scope user
gh skill install playmoreai/agent-skills review-implementation --agent codex --scope user

The alias form also works on supported GitHub CLI versions:

gh skills add playmoreai/agent-skills prd --agent codex --scope user
gh skills add playmoreai/agent-skills review-implementation --agent codex --scope user

Preview before installing:

gh skill preview playmoreai/agent-skills prd
gh skill preview playmoreai/agent-skills review-implementation

Codex Skill Installer

In Codex, ask:

Use $skill-installer to install https://github.com/playmoreai/agent-skills/tree/main/skills/prd
Use $skill-installer to install https://github.com/playmoreai/agent-skills/tree/main/skills/review-implementation

Or run the installer script directly:

python3 ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
  --repo playmoreai/agent-skills \
  --path skills/prd
python3 ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
  --repo playmoreai/agent-skills \
  --path skills/review-implementation

After installation, restart Codex so the new skill is picked up.

Shell Installer

For machines with bash, curl, and tar:

curl -fsSL https://raw.githubusercontent.com/playmoreai/agent-skills/main/install.sh | bash
curl -fsSL https://raw.githubusercontent.com/playmoreai/agent-skills/main/install.sh \
  | SKILL_PATH=skills/review-implementation SKILL_NAME=review-implementation bash

Usage

Invoke skills in Codex by name, for example:

Use $prd to create an evidence-backed PRD for this feature.
Use $review-implementation to review this implementation against tasks/prd-example.md.

The prd skill creates or updates markdown PRD files under tasks/, including phase files when the plan is large enough to split. The review-implementation skill reviews code against markdown requirements/spec docs and applies focused fixes.