Schema Evolution

Q: What is a Claude Code skill and how does the Schema Evolution skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Schema Evolution is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-05-21

Use when reasoning about how a database schema changes over time without breaking deployed application code: the expand/contract pattern (Ambler & Sadalage), the zero-downtime change rules, the backwards-and-forwards compatibility envelope (deploy ordering and rollback discipline), the catalog of schema changes (add column, drop column, rename, type change, add constraint, add index) and the safe procedure for each, the dual-write and dual-read transitions that make non-trivial changes safe in production, and the relationship between schema evolution as a design discipline and database-migration mechanics as its tooling. Do NOT use for the mechanical execution of one migration (use database-migration), schema design from scratch (use data-modeling), query tuning (use query-optimization), or distributed-data partitioning (use sharding-strategy).

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Schema Evolution includes explicit scope boundaries (an explicit 'when not to use' or 'out of scope' section); at least one code block. The SKILL.md runs to about 1,383 words, in the catalog's typical mid-range.

Source: www.npmjs.com/package/@skill-graph/cli
Original author: jacob-balslev
Indexed lastmod: 2026-05-21
Catalog position: General · general-misc
Indexed related skills: 10

How Schema Evolution fits the catalog

Schema Evolution sits in the General category under the general-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Schema Evolution is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/schema-evolution/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when reasoning about how a database schema changes over time without breaking deployed application code: the expand/contract pattern (Ambler & Sadalage), the zero-downtime change rules, the backwards-and-forwards compatibility envelope (deploy ordering and rollback discipline), the catalog of schema changes (add column, drop column, rename, type change, add constraint, add index) and the safe procedure for each, the dual-write and dual-read transitions that make non-trivial changes safe in production, and the relationship between schema evolution as a design discipline and database-migration mechanics as its tooling. Do NOT use for the mechanical execution of one migration (use database-migration), schema design from scratch (use data-modeling), query tuning (use query-optimization), or distributed-data partitioning (use sharding-strategy).

Who uses this skill

The Schema Evolution Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/schema-evolution
curl -L https://claudskills.com/skills/schema-evolution/SKILL.md \
  -o ~/.claude/skills/schema-evolution/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/schema-evolution/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/schema-evolution/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\schema-evolution\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Schema Evolution Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/schema-evolution/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Schema Evolution skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Schema Evolution skill?

Use Schema Evolution when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Schema Evolution" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Schema Evolution skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Schema Evolution is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/jacob-balslev/skill-graph/blob/HEAD/marketplace/skills/schema-evolution/SKILL.md
Author: jacob-balslev
Website: https://www.npmjs.com/package/@skill-graph/cli

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

jacob-balslev. (2026). Schema Evolution [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/schema-evolution/

BibTeX

@misc{schema-evolution-2026,
  author    = {jacob-balslev},
  title     = {Schema Evolution [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/schema-evolution/}
}

Embed this skill

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Badge

[![ClaudSkills](https://claudskills.com/badge/schema-evolution.svg)](https://claudskills.com/skills/schema-evolution/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/schema-evolution/#security)

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Browse all General skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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