Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture. Invoke for resource modeling, versioning strategies, pagination patterns, error handling standards.
Install
npx skills add Jeffallan/claude-skills --skill api-designernpx skills add Jeffallan/claude-skills --skill api-designer -a claude-code -gnpx skills add Jeffallan/claude-skills --skill api-designer -a codex -ggemini skills install https://github.com/Jeffallan/claude-skills.git --path skills/api-designergh skill install Jeffallan/claude-skills api-designergit clone --depth 1 https://github.com/Jeffallan/claude-skills /tmp/Jeffallan__claude-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Jeffallan__claude-skills/skills/api-designer ~/.claude/skills/api-designer # Claude Code
cp -R /tmp/Jeffallan__claude-skills/skills/api-designer ~/.agents/skills/api-designer # Codex, Cursor, Gemini CLI, Copilot, OpenCode