Install on OpenAI Codex

1. Clone the Skills repo

git clone https://github.com/ArraysData/arrays-skills.git ~/.arrays-skills

Codex CLI discovers skills in ~/.agents/skills/:

mkdir -p ~/.agents/skills
for d in ~/.arrays-skills/skills/arrays-data-api-*/; do
  ln -sfn "$d" ~/.agents/skills/$(basename "$d")
done

bash ~/.arrays-skills/scripts/install.sh does the same and also covers Claude Code, Gemini CLI and Cline if they are installed.

export ARRAYS_API_KEY="your_key_here"

codex "Give me the top 10 holdings of SPY and their weight."

Codex should pick the arrays-data-api-etf-fundamentals Skill from its description, read the etf/holdings endpoint, and return real data.

Codex routes to a skill by its frontmatter description; all 20 skills can be linked at once.
The links point into the clone — git pull in ~/.arrays-skills updates them.