# Backend Expert > Expertise in API design, database modeling, and server-side logic. Use when this capability is needed. - Skill: `tomevault-io/backend-expert` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/backend-expert` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/backend-expert/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Integrations & APIs - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/backend-expert --- # Backend Expert Skill Guidance for building scalable, secure, and robust backend systems. ## API Standards - Follow RESTful principles or GraphQL best practices. - Use clear versioning and consistent error handling. - Document APIs with Swagger/OpenAPI. ## Database - Design efficient schemas and indexes. - Use migrations for all schema changes. - Handle transactions and concurrency correctly. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/itublockchain) — claim your Tome and manage your conversions.