Architecture standard for building robust, type-safe TypeScript services using the "Spec and Handler" pattern. Use when building CLIs, libraries, or complex business logic.
Install
npx skills add google-labs-code/design.md --skill typed-service-contractsnpx skills add google-labs-code/design.md --skill typed-service-contracts -a claude-code -gnpx skills add google-labs-code/design.md --skill typed-service-contracts -a codex -ggemini skills install https://github.com/google-labs-code/design.md.git --path .agents/skills/typed-service-contractsgh skill install google-labs-code/design.md typed-service-contractsgit clone --depth 1 https://github.com/google-labs-code/design.md /tmp/google-labs-code__design.md
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/google-labs-code__design.md/.agents/skills/typed-service-contracts ~/.claude/skills/typed-service-contracts # Claude Code
cp -R /tmp/google-labs-code__design.md/.agents/skills/typed-service-contracts ~/.agents/skills/typed-service-contracts # Codex, Cursor, Gemini CLI, Copilot, OpenCode