OpenAgentSkill Registry Manifest Skill: api-and-interface-design Slug: addyosmani-api-and-interface-design Category: design-creative Description: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. Agent fit: - Decision: 100/100 Production-ready - Primary fit: Database and SQL - Role: Primary pick Supply profile: - Track: Coding and developer agents - Scenario: Database and SQL - Applicable agents: Claude Code, CLI, Codex, Cursor - Maintenance: 3d since push - Risk: Needs review Trust: - Trust score: 73/100 Strong shortlist - Audit: 85/100 Needs review Attribution: - Status: Registry indexed - Source: recursive skill source sync - Creator: addyosmani - Claim URL: https://www.openagentskill.com/skills/addyosmani-api-and-interface-design#claim-this-skill Install: npx skills add addyosmani/agent-skills --skill api-and-interface-design URLs: - Web: https://www.openagentskill.com/skills/addyosmani-api-and-interface-design - API: https://www.openagentskill.com/api/agent/skills/addyosmani-api-and-interface-design - Install API: https://www.openagentskill.com/api/skills/addyosmani-api-and-interface-design/install - Repository: https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design