# Backend Migrations > This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they Use when this capability is needed. - Skill: `tomevault-io/backend-migrations-2` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/backend-migrations-2` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/backend-migrations-2/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/backend-migrations-2 --- # Backend Migrations This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they relate to how it should handle data migrations in the adigunners.github.io static website project. ## When to use this skill - Adding new fields to JSON data structures in the `data/` directory while maintaining backward compatibility - Updating existing data files to support new content or features on the website - Refactoring data schema to improve organization or performance without breaking existing JavaScript modules - Creating migration scripts to transform old data format to new format (using Node.js utilities) - Documenting data structure changes so developers understand how to update pages that consume the data - Testing data compatibility when JavaScript modules expect certain properties in JSON objects - Planning gradual rollouts of data structure changes to avoid breaking the site's data consumption layer ## Instructions For details, refer to the information provided in this file: [backend migrations](../../../agent-os/standards/backend/migrations.md) --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/adigunners) — claim your Tome and manage your conversions.