Design RPC-style APIs with layered architecture (Controller → Manager → Repository). Use when creating new API endpoints, designing API contracts, or reviewing API patterns.
Install
npx skills add c0x12c/ai-toolkit --skill backend-api-designnpx skills add c0x12c/ai-toolkit --skill backend-api-design -a claude-code -gnpx skills add c0x12c/ai-toolkit --skill backend-api-design -a codex -ggemini skills install https://github.com/c0x12c/ai-toolkit.git --path toolkit/skills/backend-api-designgh skill install c0x12c/ai-toolkit backend-api-designgit clone --depth 1 https://github.com/c0x12c/ai-toolkit /tmp/c0x12c__ai-toolkit
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/c0x12c__ai-toolkit/toolkit/skills/backend-api-design ~/.claude/skills/backend-api-design # Claude Code
cp -R /tmp/c0x12c__ai-toolkit/toolkit/skills/backend-api-design ~/.agents/skills/backend-api-design # Codex, Cursor, Gemini CLI, Copilot, OpenCode